TITLE

[0001] Modified Strains for the Production of Recombinant Silk FIELD OF THE INVENTION

[0002] The present disclosure relates to methods of strain optimization to produce or enhance production of proteins or metabolites from cells. The present disclosure also relates to compositions resulting from those methods. In particular, the disclosure relates to yeast cells selected or genetically engineered to reduce degradation of recombinant proteins expressed by the yeast cells, and to methods of cultivating yeast cells for the production of useful compounds. BACKGROUND OF THE INVENTION

[0003] The methylotrophic yeast Pichia pastoris is widely used in the production of recombinant proteins. P. pastoris grows to high cell density, provides tightly controlled methanol-inducible trans gene expression and efficiently secretes heterologous proteins in defined media.

[0004] However, during culture of a strain of P. pastoris, recombinantly expressed proteins may be degraded before they can be collected, resulting in a mixture of proteins that includes fragments of recombinantly expressed proteins and a decreased yield of full-length recombinant proteins. What is needed, therefore, are tools and engineered strains to mitigate protein degradation in P. pastoris. SUMMARY OF THE INVENTION

[0005] In some embodiments, provided herein is a Pichia pastoris microorganism, in which the activity of a YPS1-1 protease and a YPS1-2 protease has been attenuated or eliminated, wherein said microorganism expresses a recombinant polypeptide.

[0006] In some embodiments, the YPS1-1 protease comprises a polypeptide sequence at least 95% identical to SEQ ID NO: 67. In some embodiments, the YPS1-1 protease comprises SEQ ID NO: 67. In some embodiments, the YPS1-1 protease is encoded by a YPS1-1 gene. In some embodiments, the YPS1-1 gene comprises a polynucleotide sequence at least 95% identical to SEQ ID NO: 1. In some embodiments, the YPS1-1 gene comprises at least 15, 20, 25, 30, 40, or 50 contiguous nucleotides of SEQ ID NO: 1. In some embodiments, the YPS1-1 gene comprises SEQ ID NO: 1. In some embodiments, the YPS1- 1 gene is at locus PAS_chr4_0584 of said microorganism.

[0007] In some embodiments, the YPS1-2 protease comprises a polypeptide sequence at least 95% identical to SEQ ID NO: 68. In some embodiments, the YPS1-2 protease comprises SEQ ID NO: 68. In some embodiments, the YPS1-2 protease is encoded by a YPS1-2 gene. In some embodiments, the YPS1-2 gene comprises a polynucleotide sequence at least 95% identical to SEQ ID NO: 2. In some embodiments, the YPS1-2 gene comprises at least 15, 20, 25, 30, 40, or 50 contiguous nucleotides of SEQ ID NO: 2. In some embodiments, the YPS1-2 gene comprises SEQ ID NO: 2. In some embodiments, the YPS1- 2 gene is at locus PAS_chr3_1157 of said microorganism.

[0008] In some embodiments, the YPS1-1 gene or said YPS1-2 gene, or both, has been mutated or knocked out.

[0009] In some embodiments, the microorganism expresses a recombinant protein. In some embodiments, the recombinant protein comprises at least one block polypeptide sequence from a silk protein. In some embodiments, the recombinant protein comprises a silk-like polypeptide. In some embodiments, the silk-like polypeptide comprises one or more repeat sequences {GGY-[GPG-X ₁ ] _n1 -GPS-(A) _n2 } _n3 , wherein X ₁ = SGGQQ or GAGQQ or GQGPY or AGQQ or SQ; n1 is from 4 to 8; n2 is from 6 to 20; and n3 is from 2 to 20. In some embodiments, the silk-like polypeptide comprises comprises a polypeptide sequence encoded by SEQ ID NO: 462.

[0010] In some embodiments, the activity of one or more additional proteases in the microorganism has been attenuated or eliminated. In some embodiments, the one or more additional proteases comprises YPS1-5, MCK7, or YPS1-3.

[0011] In some embodiments, the YPS1-5 gene is at locus PAS_chr3_0688 of said microorganism.

[0012] In some embodiments, the MCK7 protease is encoded by a MCK7 gene comprising a polynucleotide sequence at least 95% identical to SEQ ID NO: 7. In some embodiments, the MCK7 gene comprises at least 15, 20, 25, 30, 40, or 50 contiguous nucleotides of SEQ ID NO: 7. In some embodiments, the MCK7 gene comprises SEQ ID NO: 7. In some embodiments, the MCK7 gene is at locus PAS_chr1-1_0379 of said microorganism.

[0013] In some embodiments, the YPS1-3 protease is encoded by a YPS1-3 gene comprising a polynucleotide sequence at least 95% identical to SEQ ID NO: 3. In some embodiments, the YPS1-3 gene comprises at least 15, 20, 25, 30, 40, or 50 contiguous nucleotides of SEQ ID NO: 3. In some embodiments, the YPS1-3 gene comprises SEQ ID NO: 3. In some embodiments, the YPS1-3 gene is at locus PAS_chr3_0299 of said microorganism.

[0014] In some embodiments, the one or more additional proteases comprise a polypeptide sequence at least 95% identical to a polypeptide sequence selected from the group consisting of: SEQ ID NO: 68 - 130. In some embodiments, the one or more additional proteases comprise a polypeptide sequence selected from the group consisting of: SEQ ID NO: 68 - 130. In some embodiments, the one or more additional proteases are encoded by a polynucleotide sequence at least 95% identical to a polynucleotide sequence selected from the group consisting of: SEQ ID NO: 3 - 66. In some embodiments, the one or more additional proteases are encoded by a polynucleotide sequence comprising at least 15, 20, 25, 30, 40, or 50 contiguous nucleotides of a polynucleotide sequence selected from the group consisting of: SEQ ID NO: 3 - 66.

[0015] In some embodiments, the microorganism comprises a 3X, 4X or 5X protease knockout.

[0016] Also provided herein, according to some embodiments of the invention, is a Pichia pastoris engineered microorganism comprising YPS1-1 and YPS1-2 activity reduced by a mutation or deletion of the YPS1-1 gene comprising SEQ ID NO: 1 and the YPS1-2 gene comprising SEQ ID NO: 2, wherein said microorganism further comprises a recombinantly expressed protein comprising a polypeptide sequence encoded by SEQ ID NO: 462.

[0017] In some embodiments, also provided herein is cell culture comprising a protease mitigated microorganism as described herein.

[0018] Also provided herein, according to some embodiments, is a cell culture comprising a microorganism whose YPS1-1 and YPS1-2 activity has been attenuated or eliminated as described herein, wherein the microorganism recombinantly expresses a protein, wherein said recombinantly expressed protein is less degraded than a cell culture comprising an otherwise identical Picha pastoris microorganism whose YPS1-1 and YPS1-2 activity has not been attenuated or eliminated.

[0019] In some embodiments, provided herein is a method of producing a recombinant protein with a reduced degradation, comprising: culturing whose YPS1-1 and YPS1-2 activity has been attenuated or eliminated as described herein in a culture medium under conditions suitable for expression of the recombinantly expressed protein; and isolating the recombinant protein from the microorganism or the culture medium.

[0020] In some embodiments, the recombinant protein is secreted from said

microorganism, and wherein isolating said recombinant protein comprises collecting a culture medium comprising said secreted recombinant protein. In some embodiments, the recombinant protein has a decreased level of degradation as compared to said recombinant protein produced by an otherwise identical microorganism wherein said YPS1-1 and said YPS1-2 protease activity has not been attenuated or eliminated.

[0021] Also provided herein is a method of modifying Pichia pastoris to reduce the degradation of a recombinantly expressed protein, comprising knocking out or mutating a gene encoding a YPS1-1 protein and a YPS1-2 protein. In some embodiments, the method of modifying Pichia pastoris to reduce the degradation of a recombinantly expressed protein further comprises knocking out or mutating one or more additional genes encoding a YPS1-3 protein, a YPS1-5 protein, or an MCK7 protein. In some embodiments, the method of modifying Pichia pastoris to reduce the degradation of a recombinantly expressed protein further comprises knocking out one or more genes encoding a protein comprising a polypeptide selected from the group consisting of SEQ ID NO: 68-130.

[0022] In some embodiments, the recombinantly expressed protein comprises a polyA sequence comprising at least at least 2, 3, 4, 5, 6, 7, 8, 9, or 10 contiguous alanine residues. In some embodiments, the recombinantly expressed protein comprises a silk-like polypeptide. In some embodiments, the silk-like polypeptide comprises one or more repeat sequences {GGY-[GPG-X ₁ ] _n1 -GPS-(A) _n2 } _n3 , wherein X ₁ = SGGQQ or GAGQQ or GQGPY or AGQQ or SQ; n1 is from 4 to 8; n2 is from 6 to 20; and n3 is from 2 to 20. In some embodiments, the recombinantly expressed protein comprises a polypeptide sequence encoded by SEQ ID NO: 462. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The foregoing and other objects, features and advantages will be apparent from the following description of particular embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead placed upon illustrating the principles of various embodiments of the invention.

[0024] Figure 1 is a plasmid map for KU 70 deletion with a zeocin resistance marker.

[0025] Figure 2 is a plasmid map of a plasmid comprising a nourseothricin marker used with homology arms for targeted protease gene deletion.

[0026] Figure 3A and Figure 3B are cassettes for protease knockout with homology arms targeting the desired protease gene flanking a nourseothricin resistance marker. [0027] Figure 4 is a representative western blot of protein isolated from single KO strains to show protein degradation from these strains.

[0028] Figure 5 is a representative western blot of protein isolated from double KO strains to show protein degradation from these strains.

[0029] Figure 6 is a representative western blot of protein isolated from 2X, 3X, 4X, and 5X protease KO strains subcultured in BMGY or YPD to show protein degradation in these strains. DETAILED DESCRIPTION

[0030] The details of various embodiments of the invention are set forth in the description below. Other features, objects, and advantages of the invention will be apparent from the description and the drawings, and from the claims.

Definitions

[0031] Unless otherwise defined herein, scientific and technical terms used in connection with the present invention shall have the meanings that are commonly understood by those of ordinary skill in the art. Further, unless otherwise required by context, singular terms shall include the plural and plural terms shall include the singular. The terms“a” and“an” includes plural references unless the context dictates otherwise. Generally, nomenclatures used in connection with, and techniques of, biochemistry, enzymology, molecular and cellular biology, microbiology, genetics and protein and nucleic acid chemistry and hybridization described herein are those well-known and commonly used in the art.

[0032] The following terms, unless otherwise indicated, shall be understood to have the following meanings:

[0033] The term“polynucleotide” or“nucleic acid molecule” refers to a polymeric form of nucleotides of at least 10 bases in length. The term includes DNA molecules (e.g., cDNA or genomic or synthetic DNA) and RNA molecules (e.g., mRNA or synthetic RNA), as well as analogs of DNA or RNA containing non-natural nucleotide analogs, non-native

internucleoside bonds, or both. The nucleic acid can be in any topological conformation. For instance, the nucleic acid can be single-stranded, double-stranded, triple-stranded, quadruplexed, partially double-stranded, branched, hairpinned, circular, or in a padlocked conformation.

[0034] Unless otherwise indicated, and as an example for all sequences described herein under the general format“SEQ ID NO:”,“nucleic acid comprising SEQ ID NO:1” refers to a nucleic acid, at least a portion of which has either (i) the sequence of SEQ ID NO:1, or (ii) a sequence complementary to SEQ ID NO:1. The choice between the two is dictated by the context. For instance, if the nucleic acid is used as a probe, the choice between the two is dictated by the requirement that the probe be complementary to the desired target.

[0035] An“isolated” RNA, DNA or a mixed polymer is one which is substantially separated from other cellular components that naturally accompany the native polynucleotide in its natural host cell, e.g., ribosomes, polymerases and genomic sequences with which it is naturally associated.

[0036] An“isolated” organic molecule (e.g., a silk protein) is one which is substantially separated from the cellular components (membrane lipids, chromosomes, proteins) of the host cell from which it originated, or from the medium in which the host cell was cultured. The term does not require that the biomolecule has been separated from all other chemicals, although certain isolated biomolecules may be purified to near homogeneity.

[0037] The term“recombinant” refers to a biomolecule, e.g., a gene or protein, that (1) has been removed from its naturally occurring environment, (2) is not associated with all or a portion of a polynucleotide in which the gene is found in nature, (3) is operatively linked to a polynucleotide which it is not linked to in nature, or (4) does not occur in nature. The term “recombinant” can be used in reference to cloned DNA isolates, chemically synthesized polynucleotide analogs, or polynucleotide analogs that are biologically synthesized by heterologous systems, as well as proteins and/or mRNAs encoded by such nucleic acids.

[0038] An endogenous nucleic acid sequence in the genome of an organism (or the encoded protein product of that sequence) is deemed“recombinant” herein if a heterologous sequence is placed adjacent to the endogenous nucleic acid sequence, such that the expression of this endogenous nucleic acid sequence is altered. In this context, a

heterologous sequence is a sequence that is not naturally adjacent to the endogenous nucleic acid sequence, whether or not the heterologous sequence is itself endogenous (originating from the same host cell or progeny thereof) or exogenous (originating from a different host cell or progeny thereof). By way of example, a promoter sequence can be substituted (e.g., by homologous recombination) for the native promoter of a gene in the genome of a host cell, such that this gene has an altered expression pattern. This gene would now become “recombinant” because it is separated from at least some of the sequences that naturally flank it.

[0039] A nucleic acid is also considered“recombinant” if it contains any modifications that do not naturally occur to the corresponding nucleic acid in a genome. For instance, an endogenous coding sequence is considered“recombinant” if it contains an insertion, deletion or a point mutation introduced artificially, e.g., by human intervention. A“recombinant nucleic acid” also includes a nucleic acid integrated into a host cell chromosome at a heterologous site and a nucleic acid construct present as an episome.

[0040] As used herein, the phrase“degenerate variant” of a reference nucleic acid sequence encompasses nucleic acid sequences that can be translated, according to the standard genetic code, to provide an amino acid sequence identical to that translated from the reference nucleic acid sequence. The term“degenerate oligonucleotide” or“degenerate primer” is used to signify an oligonucleotide capable of hybridizing with target nucleic acid sequences that are not necessarily identical in sequence but that are homologous to one another within one or more particular segments.

[0041] The term“percent sequence identity” or“identical” in the context of nucleic acid sequences refers to the residues in the two sequences which are the same when aligned for maximum correspondence. The length of sequence identity comparison may be over a stretch of at least about nine nucleotides, usually at least about 20 nucleotides, more usually at least about 24 nucleotides, typically at least about 28 nucleotides, more typically at least about 32 nucleotides, and preferably at least about 36 or more nucleotides. There are a number of different algorithms known in the art which can be used to measure nucleotide sequence identity. For instance, polynucleotide sequences can be compared using FASTA, Gap or Bestfit, which are programs in Wisconsin Package Version 10.0, Genetics Computer Group (GCG), Madison, Wis. FASTA provides alignments and percent sequence identity of the regions of the best overlap between the query and search sequences. Pearson, Methods Enzymol.183:63-98 (1990) (hereby incorporated by reference in its entirety). For instance, percent sequence identity between nucleic acid sequences can be determined using FASTA with its default parameters (a word size of 6 and the NOPAM factor for the scoring matrix) or using Gap with its default parameters as provided in GCG Version 6.1, herein

incorporated by reference. Alternatively, sequences can be compared using the computer program, BLAST (Altschul et al., J. Mol. Biol.215:403-410 (1990); Gish and States, Nature Genet.3:266-272 (1993); Madden et al., Meth. Enzymol.266:131-141 (1996); Altschul et al., Nucleic Acids Res. 25:3389-3402 (1997); Zhang and Madden, Genome Res. 7:649-656 (1997)), especially blastp or tblastn (Altschul et al., Nucleic Acids Res. 25:3389-3402 (1997)).

[0042] The term“substantial homology” or“substantial similarity,” when referring to a nucleic acid or fragment thereof, indicates that, when optimally aligned with appropriate nucleotide insertions or deletions with another nucleic acid (or its complementary strand), there is nucleotide sequence identity in at least about 75%, 80%, 85%, preferably at least about 90%, and more preferably at least about 95%, 96%, 97%, 98% or 99% of the nucleotide bases, as measured by any well-known algorithm of sequence identity, such as FASTA, BLAST or Gap, as discussed above.

[0043] Alternatively, substantial homology or similarity exists when a nucleic acid or fragment thereof hybridizes to another nucleic acid, to a strand of another nucleic acid, or to the complementary strand thereof, under stringent hybridization conditions.“Stringent hybridization conditions” and“stringent wash conditions” in the context of nucleic acid hybridization experiments depend upon a number of different physical parameters. Nucleic acid hybridization will be affected by such conditions as salt concentration, temperature, solvents, the base composition of the hybridizing species, length of the complementary regions, and the number of nucleotide base mismatches between the hybridizing nucleic acids, as will be readily appreciated by those skilled in the art. One having ordinary skill in the art knows how to vary these parameters to achieve a particular stringency of

hybridization.

[0044] In general,“stringent hybridization” is performed at about 25°C below the thermal melting point (T _m ) for the specific DNA hybrid under a particular set of conditions.

“Stringent washing” is performed at temperatures about 5°C lower than the T _m for the specific DNA hybrid under a particular set of conditions. The T _m is the temperature at which 50% of the target sequence hybridizes to a perfectly matched probe. See Sambrook et al., Molecular Cloning: A Laboratory Manual, 2d ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989), page 9.51, hereby incorporated by reference. For purposes herein,“stringent conditions” are defined for solution phase hybridization as aqueous hybridization (i.e., free of formamide) in 6xSSC (where 20xSSC contains 3.0 M NaCl and 0.3 M sodium citrate), 1% SDS at 65°C for 8-12 hours, followed by two washes in 0.2xSSC, 0.1% SDS at 65ºC for 20 minutes. It will be appreciated by the skilled worker that hybridization at 65°C will occur at different rates depending on a number of factors including the length and percent identity of the sequences which are hybridizing.

[0045] The nucleic acids (also referred to as polynucleotides) of this present invention may include both sense and antisense strands of RNA, cDNA, genomic DNA, and synthetic forms and mixed polymers of the above. They may be modified chemically or biochemically or may contain non-natural or derivatized nucleotide bases, as will be readily appreciated by those of skill in the art. Such modifications include, for example, labels, methylation, substitution of one or more of the naturally occurring nucleotides with an analog, internucleotide modifications such as uncharged linkages (e.g., methyl phosphonates, phosphotriesters, phosphoramidates, carbamates, etc.), charged linkages (e.g.,

phosphorothioates, phosphorodithioates, etc.), pendent moieties (e.g., polypeptides), intercalators (e.g., acridine, psoralen, etc.), chelators, alkylators, and modified linkages (e.g., alpha anomeric nucleic acids, etc.) Also included are synthetic molecules that mimic polynucleotides in their ability to bind to a designated sequence via hydrogen bonding and other chemical interactions. Such molecules are known in the art and include, for example, those in which peptide linkages substitute for phosphate linkages in the backbone of the molecule. Other modifications can include, for example, analogs in which the ribose ring contains a bridging moiety or other structure such as the modifications found in“locked” nucleic acids.

[0046] The term“mutated” when applied to nucleic acid sequences means that nucleotides in a nucleic acid sequence may be inserted, deleted or changed compared to a reference nucleic acid sequence. A single alteration may be made at a locus (a point mutation) or multiple nucleotides may be inserted, deleted or changed at a single locus. In addition, one or more alterations may be made at any number of loci within a nucleic acid sequence. A nucleic acid sequence may be mutated by any method known in the art including but not limited to mutagenesis techniques such as“error-prone PCR” (a process for performing PCR under conditions where the copying fidelity of the DNA polymerase is low, such that a high rate of point mutations is obtained along the entire length of the PCR product; see, e.g., Leung et al., Technique, 1:11-15 (1989) and Caldwell and Joyce, PCR Methods Applic.2:28- 33 (1992)); and“oligonucleotide-directed mutagenesis” (a process which enables the generation of site-specific mutations in any cloned DNA segment of interest; see, e.g., Reidhaar-Olson and Sauer, Science 241:53-57 (1988)).

[0047] The term“attenuate” as used herein generally refers to a functional deletion, including a mutation, partial or complete deletion, insertion, or other variation made to a gene sequence or a sequence controlling the transcription of a gene sequence, which reduces or inhibits production of the gene product, or renders the gene product non-functional. In some instances a functional deletion is described as a knockout mutation. Attenuation also includes amino acid sequence changes by altering the nucleic acid sequence, placing the gene under the control of a less active promoter, down-regulation, expressing interfering RNA, ribozymes or antisense sequences that target the gene of interest, or through any other technique known in the art. In one example, the sensitivity of a particular enzyme to feedback inhibition or inhibition caused by a composition that is not a product or a reactant (non-pathway specific feedback) is lessened such that the enzyme activity is not impacted by the presence of a compound. In other instances, an enzyme that has been altered to be less active can be referred to as attenuated.

[0048] The term“deletion” as used herein refers to the removal of one or more nucleotides from a nucleic acid molecule or one or more amino acids from a protein, the regions on either side being joined together.

[0049] The term“knock-out” as used herein is intended to refer to a gene whose level of expression or activity has been reduced to zero. In some examples, a gene is knocked-out via deletion of some or all of its coding sequence. In other examples, a gene is knocked-out via introduction of one or more nucleotides into its open reading frame, which results in translation of a non-sense or otherwise non-functional protein product.

[0050] The term“vector” as used herein is intended to refer to a nucleic acid molecule capable of transporting another nucleic acid to which it has been linked. One type of vector is a“plasmid,” which generally refers to a circular double stranded DNA loop into which additional DNA segments may be ligated, but also includes linear double-stranded molecules such as those resulting from amplification by the polymerase chain reaction (PCR) or from treatment of a circular plasmid with a restriction enzyme. Other vectors include cosmids, bacterial artificial chromosomes (BAC) and yeast artificial chromosomes (YAC). Another type of vector is a viral vector, wherein additional DNA segments may be ligated into the viral genome (discussed in more detail below). Certain vectors are capable of autonomous replication in a host cell into which they are introduced (e.g., vectors having an origin of replication which functions in the host cell). Other vectors can be integrated into the genome of a host cell upon introduction into the host cell, and are thereby replicated along with the host genome. Moreover, certain preferred vectors are capable of directing the expression of genes to which they are operatively linked. Such vectors are referred to herein as

“recombinant expression vectors” (or simply“expression vectors”).

[0051] “Operatively linked” or“operably linked” expression control sequences refers to a linkage in which the expression control sequence is contiguous with the gene of interest to control the gene of interest, as well as expression control sequences that act in trans or at a distance to control the gene of interest.

[0052] The term“expression control sequence” refers to polynucleotide sequences which are necessary to affect the expression of coding sequences to which they are operatively linked. Expression control sequences are sequences which control the transcription, post- transcriptional events and translation of nucleic acid sequences. Expression control sequences include appropriate transcription initiation, termination, promoter and enhancer sequences; efficient RNA processing signals such as splicing and polyadenylation signals; sequences that stabilize cytoplasmic mRNA; sequences that enhance translation efficiency (e.g., ribosome binding sites); sequences that enhance protein stability; and when desired, sequences that enhance protein secretion. The nature of such control sequences differs depending upon the host organism; in prokaryotes, such control sequences generally include promoter, ribosomal binding site, and transcription termination sequence. The term“control sequences” is intended to include, at a minimum, all components whose presence is essential for expression, and can also include additional components whose presence is advantageous, for example, leader sequences and fusion partner sequences.

[0053] The term“regulatory element” refers to any element which affects transcription or translation of a nucleic acid molecule. These include, by way of example but not limitation: regulatory proteins (e.g., transcription factors), chaperones, signaling proteins, RNAi molecules, antisense RNA molecules, microRNAs and RNA aptamers. Regulatory elements may be endogenous to the host organism. Regulatory elements may also be exogenous to the host organism. Regulatory elements may be synthetically generated regulatory elements.

[0054] The term“promoter,”“promoter element,” or“promoter sequence” as used herein, refers to a DNA sequence which when ligated to a nucleotide sequence of interest is capable of controlling the transcription of the nucleotide sequence of interest into mRNA. A promoter is typically, though not necessarily, located 5ƍ (i.e., upstream) of a nucleotide sequence of interest whose transcription into mRNA it controls, and provides a site for specific binding by RNA polymerase and other transcription factors for initiation of transcription. Promoters may be endogenous to the host organism. Promoters may also be exogenous to the host organism. Promoters may be synthetically generated regulatory elements.

[0055] Promoters useful for expressing the recombinant genes described herein include both constitutive and inducible/repressible promoters. Where multiple recombinant genes are expressed in an engineered organism of the invention, the different genes can be controlled by different promoters or by identical promoters in separate operons, or the expression of two or more genes may be controlled by a single promoter as part of an operon.

[0056] The term“recombinant host cell” (or simply“host cell”), as used herein, is intended to refer to a cell into which a recombinant vector has been introduced. It should be understood that such terms are intended to refer not only to the particular subject cell but to the progeny of such a cell. Because certain modifications may occur in succeeding generations due to either mutation or environmental influences, such progeny may not, in fact, be identical to the parent cell, but are still included within the scope of the term“host cell” as used herein. A recombinant host cell may be an isolated cell or cell line grown in culture or may be a cell which resides in a living tissue or organism.

[0057] The term“peptide” as used herein refers to a short polypeptide, e.g., one that is typically less than about 50 amino acids long and more typically less than about 30 amino acids long. The term as used herein encompasses analogs and mimetics that mimic structural and thus biological function.

[0058] The term“polypeptide” encompasses both naturally-occurring and non-naturally- occurring proteins, and fragments, mutants, derivatives and analogs thereof. A polypeptide may be monomeric or polymeric. Further, a polypeptide may comprise a number of different domains each of which has one or more distinct activities.

[0059] The term“isolated protein” or“isolated polypeptide” is a protein or polypeptide that by virtue of its origin or source of derivation (1) is not associated with naturally associated components that accompany it in its native state, (2) exists in a purity not found in nature, where purity can be adjudged with respect to the presence of other cellular material (e.g., is free of other proteins from the same species) (3) is expressed by a cell from a different species, or (4) does not occur in nature (e.g., it is a fragment of a polypeptide found in nature or it includes amino acid analogs or derivatives not found in nature or linkages other than standard peptide bonds). Thus, a polypeptide that is chemically synthesized or synthesized in a cellular system different from the cell from which it naturally originates will be“isolated” from its naturally associated components. A polypeptide or protein may also be rendered substantially free of naturally associated components by isolation, using protein purification techniques well known in the art. As thus defined,“isolated” does not necessarily require that the protein, polypeptide, peptide or oligopeptide so described has been physically removed from its native environment.

[0060] The term“polypeptide fragment” refers to a polypeptide that has a deletion, e.g., an amino-terminal and/or carboxy-terminal deletion compared to a full-length polypeptide. In a preferred embodiment, the polypeptide fragment is a contiguous sequence in which the amino acid sequence of the fragment is identical to the corresponding positions in the naturally-occurring sequence. Fragments typically are at least 5, 6, 7, 8, 9 or 10 amino acids long, preferably at least 12, 14, 16 or 18 amino acids long, more preferably at least 20 amino acids long, more preferably at least 25, 30, 35, 40 or 45, amino acids, even more preferably at least 50 or 60 amino acids long, and even more preferably at least 70 amino acids long.

[0061] A protein has“homology” or is“homologous” to a second protein if the nucleic acid sequence that encodes the protein has a similar sequence to the nucleic acid sequence that encodes the second protein. Alternatively, a protein has homology to a second protein if the two proteins have "similar" amino acid sequences. (Thus, the term“homologous proteins” is defined to mean that the two proteins have similar amino acid sequences.) As used herein, homology between two regions of amino acid sequence (especially with respect to predicted structural similarities) is interpreted as implying similarity in function.

[0062] When“homologous” is used in reference to proteins or peptides, it is recognized that residue positions that are not identical often differ by conservative amino acid substitutions. A“conservative amino acid substitution” is one in which an amino acid residue is substituted by another amino acid residue having a side chain (R group) with similar chemical properties (e.g., charge or hydrophobicity). In general, a conservative amino acid substitution will not substantially change the functional properties of a protein. In cases where two or more amino acid sequences differ from each other by conservative

substitutions, the percent sequence identity or degree of homology may be adjusted upwards to correct for the conservative nature of the substitution. Means for making this adjustment are well known to those of skill in the art. See, e.g., Pearson, 1994, Methods Mol. Biol.

24:307-31 and 25:365-89 (herein incorporated by reference).

[0063] The twenty conventional amino acids and their abbreviations follow conventional usage. See Immunology-A Synthesis (Golub and Gren eds., Sinauer Associates, Sunderland, Mass., 2 ^nd ed. 1991), which is incorporated herein by reference. Stereoisomers (e.g., D-amino acids) of the twenty conventional amino acids, unnatural amino acids such as Į-, Į- disubstituted amino acids, N-alkyl amino acids, and other unconventional amino acids may also be suitable components for polypeptides of the present invention. Examples of unconventional amino acids include: 4-hydroxyproline, Ȗ-carboxyglutamate, İ-N,N,N- trimethyllysine, İ-N-acetyllysine, O-phosphoserine, N-acetylserine, N-formylmethionine, 3- methylhistidine, 5-hydroxylysine, N-methylarginine, and other similar amino acids and imino acids (e.g., 4-hydroxyproline). In the polypeptide notation used herein, the left-hand end corresponds to the amino terminal end and the right-hand end corresponds to the carboxy- terminal end, in accordance with standard usage and convention.

[0064] The following six groups each contain amino acids that are conservative substitutions for one another: 1) Serine (S), Threonine (T); 2) Aspartic Acid (D), Glutamic Acid (E); 3) Asparagine (N), Glutamine (Q); 4) Arginine (R), Lysine (K); 5) Isoleucine (I), Leucine (L), Methionine (M), Alanine (A), Valine (V), and 6) Phenylalanine (F), Tyrosine (Y), Tryptophan (W).

[0065] Sequence homology for polypeptides, which is sometimes also referred to as percent sequence identity, is typically measured using sequence analysis software. See, e.g., the Sequence Analysis Software Package of the Genetics Computer Group (GCG),

University of Wisconsin Biotechnology Center, 910 University Avenue, Madison, Wis. 53705. Protein analysis software matches similar sequences using a measure of homology assigned to various substitutions, deletions and other modifications, including conservative amino acid substitutions. For instance, GCG contains programs such as“Gap” and“Bestfit” which can be used with default parameters to determine sequence homology or sequence identity between closely related polypeptides, such as homologous polypeptides from different species of organisms or between a wild-type protein and a mutein thereof. See, e.g., GCG Version 6.1.

[0066] A useful algorithm when comparing a particular polypeptide sequence to a database containing a large number of sequences from different organisms is the computer program BLAST (Altschul et al., J. Mol. Biol.215:403-410 (1990); Gish and States, Nature Genet. 3:266-272 (1993); Madden et al., Meth. Enzymol. 266:131-141 (1996); Altschul et al., Nucleic Acids Res. 25:3389-3402 (1997); Zhang and Madden, Genome Res.7:649-656 (1997)), especially blastp or tblastn (Altschul et al., Nucleic Acids Res.25:3389-3402 (1997)).

[0067] Preferred parameters for BLASTp are: Expectation value: 10 (default); Filter: seg (default); Cost to open a gap: 11 (default); Cost to extend a gap: 1 (default); Max.

alignments: 100 (default); Word size: 11 (default); No. of descriptions: 100 (default); Penalty Matrix: BLOWSUM62.

[0068] Preferred parameters for BLASTp are: Expectation value: 10 (default); Filter: seg (default); Cost to open a gap: 11 (default); Cost to extend a gap: 1 (default); Max.

alignments: 100 (default); Word size: 11 (default); No. of descriptions: 100 (default); Penalty Matrix: BLOWSUM62.The length of polypeptide sequences compared for homology will generally be at least about 16 amino acid residues, usually at least about 20 residues, more usually at least about 24 residues, typically at least about 28 residues, and preferably more than about 35 residues. When searching a database containing sequences from a large number of different organisms, it is preferable to compare amino acid sequences. Database searching using amino acid sequences can be measured by algorithms other than blastp known in the art. For instance, polypeptide sequences can be compared using FASTA, a program in GCG Version 6.1. FASTA provides alignments and percent sequence identity of the regions of the best overlap between the query and search sequences. Pearson, Methods Enzymol. 183:63-98 (1990) (incorporated by reference herein). For example, percent sequence identity between amino acid sequences can be determined using FASTA with its default parameters (a word size of 2 and the PAM250 scoring matrix), as provided in GCG Version 6.1, herein incorporated by reference.

[0069] Throughout this specification and claims, the word“comprise” or variations such as “comprises” or“comprising,” will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

[0070] Exemplary methods and materials are described below, although methods and materials similar or equivalent to those described herein can also be used in the practice of the present invention and will be apparent to those of skill in the art. All publications and other references mentioned herein are incorporated by reference in their entirety. In case of conflict, the present specification, including definitions, will control. The materials, methods, and examples are illustrative only and not intended to be limiting.

Overview

[0071] Provided herein are recombinant strains and methods of producing recombinant strains to increase production of a full-length desired product in a target cell, e.g., by reducing protease degradation.

[0072] In some embodiments, to attenuate a protease activity in Pichia pastoris, the genes encoding these enzymes are inactivated or mutated to reduce or eliminate activity. This can be done through mutations or insertions into the gene itself of through modification of a gene regulatory element. This can be achieved through standard yeast genetics techniques.

Examples of such techniques include gene replacement through double homologous recombination, in which homologous regions flanking the gene to be inactivated are cloned in a vector flanking a selectable maker gene (such as an antibiotic resistance gene or a gene complementing an auxotrophy of the yeast strain).

[0073] Alternatively, the homologous regions can be PCR-amplified and linked through overlapping PCR to the selectable marker gene. Subsequently, such DNA fragments are transformed into Pichia pastoris through methods known in the art, e.g., electroporation. Transformants that then grow under selective conditions are analyzed for the gene disruption event through standard techniques, e.g. PCR on genomic DNA or Southern blot. In an alternative experiment, gene inactivation can be achieved through single homologous recombination, in which case, e.g. the 5ƍ end of the gene's ORF is cloned on a promoterless vector also containing a selectable marker gene. Upon linearization of such vector through digestion with a restriction enzyme only cutting the vector in the target-gene homologous fragment, such vector is transformed into Pichia pastoris. Integration at the target gene site is confirmed through PCR on genomic DNA or Southern blot. In this way, a duplication of the gene fragment cloned on the vector is achieved in the genome, resulting in two copies of the target gene locus: a first copy in which the ORF is incomplete, thus resulting in the expression (if at all) of a shortened, inactive protein, and a second copy which has no promoter to drive transcription.

[0074] Alternatively, transposon mutagenesis is used to inactivate the target gene. A library of such mutants can be screened through PCR for insertion events in the target gene.

[0075] The functional phenotype (i.e., deficiencies) of an engineered/knockout strain can be assessed using techniques known in the art. For example, a deficiency of an engineered strain in protease activity can be ascertained using any of a variety of methods known in the art, such as an assay of hydrolytic activity of chromogenic protease substrates, band shifts of substrate proteins for the selected protease, among others.

[0076] Attenuation of a protease activity described herein can be achieved through mechanisms other than a knockout mutation. For example, a desired protease can be attenuated via amino acid sequence changes by altering the nucleic acid sequence, placing the gene under the control of a less active promoter, down-regulation, expressing interfering RNA, ribozymes or antisense sequences that target the gene of interest, or through any other technique known in the art. In preferred strains, the protease activity of proteases encoded at PAS_chr4_0584 (YPS1-1) and PAS_chr3_1157 (YPS1-2) (e.g., polypeptides comprising SEQ ID NO: 66 and 67) is attenuated by any of the methods described above. In some aspects, the invention is directed to methylotrophic yeast strains, especially Pichia pastoris strains, wherein a YPS1-1 and a YPS1-2 gene (e.g., as set forth in SEQ ID NO: 1 and SEQ ID NO: 2) have been inactivated. In some embodiments, additional protease encoding genes may also be knocked-out in accordance with the methods provided herein to further reduce protease activity of a desired protein product expressed by the strain.

Production of recombinant strains

[0077] Provided herein are methods of transforming a strain to reduce activity, e.g., using vectors to deliver recombinant genes or to knock-out or otherwise attenuate endogenous genes as desired. These vectors can take the form of a vector backbone containing a replication origin and a selection marker (typically antibiotic resistance, although many other methods are possible), or a linear fragment that enables incorporation into the target cell’s chromosome. The vectors should correspond to the organism and insertion method chosen.

[0078] Once the elements of a vector are selected, construction of the vector can be performed in many different ways. In an embodiment, a DNA synthesis service or a method to individually make every vector may be used.

[0079] Once the DNA for each vector (including the additional elements required for insertion and operation) is acquired, it must be assembled. There are many possible assembly methods including (but not limited to) restriction enzyme cloning, blunt-end ligation, and overlap assembly [see, e.g., Gibson, D.G., et al., Enzymatic assembly of DNA molecules up to several hundred kilobases. Nature methods, 6(5), 343–345 (2009), and GeneArt Kit

(http://tools.invitrogen.com/content/sfs/manuals/geneart_ seamless_cloning_and_assembly_m an.pdf)]. Overlap assembly provides a method to ensure all of the elements get assembled in the correct position and do not introduce any undesired sequences.

[0080] The vectors generated above can be inserted into target cells using standard molecular biology techniques, e.g., molecular cloning. In an embodiment, the target cells are already engineered or selected such that they already contain the genes required to make the desired product, although this may also be done during or after further vector insertion.

[0081] Depending on the organism and library element type (plasmid or genomic insertion), several known methods of inserting the vector comprising DNA to incorporate into the cells may be used. These may include, for example, transformation of

microorganisms able to take up and replicate DNA from the local environment,

transformation by electroporation or chemical means, transduction with a virus or phage, mating of two or more cells, or conjugation from a different cell.

[0082] Several methods are known in the art to introduce recombinant DNA in bacterial cells that include but are not limited to transformation, transduction, and electroporation, see Sambrook, et al., Molecular Cloning: A Laboratory Manual (1989), Second Edition, Cold Spring Harbor Press, Plainview, N.Y. Non-limiting examples of commercial kits and bacterial host cells for transformation include NovaBlue Singles ^TM (EMD Chemicals Inc., NJ, USA), Max Efficiency® DH5Į™, One Shot® BL21 (DE3) E. coli cells, One Shot ® BL21 (DE3) pLys E. coli cells (Invitrogen Corp., Carlsbad, Calif., USA), XL1-Blue competent cells (Stratagene, CA, USA). Non limiting examples of commercial kits and bacterial host cells for electroporation include Zappers™ electrocompetent cells (EMD Chemicals Inc., NJ, USA), XL1-Blue Electroporation-competent cells (Stratagene, CA, USA), ElectroMAX™ A. tumefaciens LBA4404 Cells (Invitrogen Corp., Carlsbad, Calif., USA).

[0083] Several methods are known in the art to introduce recombinant nucleic acid in eukaryotic cells. Exemplary methods include transfection, electroporation, liposome mediated delivery of nucleic acid, microinjection into to the host cell, see Sambrook, et al., Molecular Cloning: A Laboratory Manual (1989), Second Edition, Cold Spring Harbor Press, Plainview, N.Y. Non-limiting examples of commercial kits and reagents for transfection of recombinant nucleic acid to eukaryotic cell include Lipofectamine™ 2000, Optifect™ Reagent, Calcium Phosphate Transfection Kit (Invitrogen Corp., Carlsbad, Calif., USA), GeneJammer® Transfection Reagent, LipoTAXI® Transfection Reagent (Stratagene, CA, USA). Alternatively, recombinant nucleic acid may be introduced into insect cells (e.g. sf9, sf21, High Five™) by using baculo viral vectors.

[0084] Transformed cells are isolated so that each clone can be tested separately. In an embodiment, this is done by spreading the culture on one or more plates of culture media containing a selective agent (or lack of one) that will ensure that only transformed cells survive and reproduce. This specific agent may be an antibiotic (if the library contains an antibiotic resistance marker), a missing metabolite (for auxotroph complementation), or other means of selection. The cells are grown into individual colonies, each of which contains a single clone.

[0085] Colonies are screened for desired production of a protein, metabolite, or other product, or for reduction in protease activity. In an embodiment, screening identifies recombinant cells having the highest (or high enough) product production titer or efficiency. This includes a decreased proportion of degradation products or an increased total amount of full-length desired polypeptides collected from a cell culture.

[0086] This assay can be performed by growing individual clones, one per well, in multi- well culture plates. Once the cells have reached an appropriate biomass density, they are induced with methanol. After a period of time, typically 24-72 hours of induction, the cultures are harvested by spinning in a centrifuge to pellet the cells and removing the supernatant. The supernatant from each culture can then be tested for protease activity and/or protein degradation. Silk Sequences

[0001] In some embodiments, the modified strains with reduced protease activity described herein recombinantly express a silk-like polypeptide sequence. In some embodiments, the silk-like polypeptide sequences are 1) block copolymer polypeptide compositions generated by mixing and matching repeat domains derived from silk polypeptide sequences and/or 2) recombinant expression of block copolymer polypeptides having sufficiently large size (approximately 40 kDa) to form useful fibers by secretion from an industrially scalable microorganism. Large (approximately 40 kDa to approximately 100 kDa) block copolymer polypeptides engineered from silk repeat domain fragments, including sequences from almost all published amino acid sequences of spider silk polypeptides, can be expressed in the modified microorganisms described herein. In some embodiments, silk polypeptide sequences are matched and designed to produce highly expressed and secreted polypeptides capable of fiber formation. In some embodiments, knock-out of protease genes or reduction of protease activity in the host modified strain reduces degradation of the silk like polypeptides.

[0002] Provided herein, in several embodiments, are compositions for expression and secretion of block copolymers engineered from a combinatorial mix of silk polypeptide domains across the silk polypeptide sequence space, wherein the block copolymers have minimal degradation. In some embodiments provided herein are methods of secreting block copolymers in scalable organisms (e.g., yeast, fungi, and gram positive bacteria) with minimal degradation. In some embodiments, the block copolymer polypeptide comprises 0 or more N-terminal domains (NTD), 1 or more repeat domains (REP), and 0 or more C- terminal domains (CTD). In some aspects of the embodiment, the block copolymer polypeptide is >100 amino acids of a single polypeptide chain. In some embodiments, the block copolymer polypeptide comprises a domain that is at least 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% identical to a sequence of a block copolymer polypeptide as disclosed in International Publication No. WO/2015/042164,“Methods and Compositions for Synthesizing Improved Silk Fibers,” incorporated by reference in its entirety.

[0003] Several types of native spider silks have been identified. The mechanical properties of each natively spun silk type are believed to be closely connected to the molecular composition of that silk. See, e.g., Garb, J.E., et al., Untangling spider silk evolution with spidroin terminal domains, BMC Evol. Biol., 10:243 (2010); Bittencourt, D., et al., Protein families, natural history and biotechnological aspects of spider silk, Genet. Mol. Res., 11:3 (2012); Rising, A., et al., Spider silk proteins: recent advances in recombinant production, structure-function relationships and biomedical applications, Cell. Mol. Life Sci., 68:2, pg. 169-184 (2011); and Humenik, M., et al., Spider silk: understanding the structure-function relationship of a natural fiber, Prog. Mol. Biol. Transl. Sci., 103, pg.131-85 (2011). For example:

[0004] Aciniform (AcSp) silks tend to have high toughness, a result of moderately high strength coupled with moderately high extensibility. AcSp silks are characterized by large block (“ensemble repeat”) sizes that often incorporate motifs of poly serine and GPX.

Tubuliform (TuSp or Cylindrical) silks tend to have large diameters, with modest strength and high extensibility. TuSp silks are characterized by their poly serine and poly threonine content, and short tracts of poly alanine. Major Ampullate (MaSp) silks tend to have high strength and modest extensibility. MaSp silks can be one of two subtypes: MaSp1 and MaSp2. MaSp1 silks are generally less extensible than MaSp2 silks, and are characterized by poly alanine, GX, and GGX motifs. MaSp2 silks are characterized by poly alanine, GGX, and GPX motifs. Minor Ampullate (MiSp) silks tend to have modest strength and modest extensibility. MiSp silks are characterized by GGX, GA, and poly A motifs, and often contain spacer elements of approximately 100 amino acids. Flagelliform (Flag) silks tend to have very high extensibility and modest strength. Flag silks are usually characterized by GPG, GGX, and short spacer motifs.

[0005] The properties of each silk type can vary from species to species, and spiders leading distinct lifestyles (e.g. sedentary web spinners vs. vagabond hunters) or that are

evolutionarily older may produce silks that differ in properties from the above descriptions (for descriptions of spider diversity and classification, see Hormiga, G., and Griswold, C.E., Systematics, phylogeny, and evolution of orb-weaving spiders, Annu. Rev. Entomol.59, pg. 487-512 (2014); and Blackedge, T.A. et al., Reconstructing web evolution and spider diversification in the molecular era, Proc. Natl. Acad. Sci. U.S.A., 106:13, pg.5229-5234 (2009)). However, synthetic block copolymer polypeptides having sequence similarity and/or amino acid composition similarity to the repeat domains of native silk proteins can be used to manufacture on commercial scales consistent silk-like fibers that recapitulate the properties of corresponding natural silk fibers.

[0006] In some embodiments, a list of putative silk sequences can be compiled by searching GenBank for relevant terms, e.g.“spidroin”“fibroin”“MaSp”, and those sequences can be pooled with additional sequences obtained through independent sequencing efforts. Sequences are then translated into amino acids, filtered for duplicate entries, and manually split into domains (NTD, REP, CTD). In some embodiments, candidate amino acid sequences are reverse translated into a DNA sequence optimized for expression in Pichia (Komagataella) pastoris. The DNA sequences are each cloned into an expression vector and transformed into Pichia (Komagataella) pastoris. In some embodiments, various silk domains demonstrating successful expression and secretion are subsequently assembled in combinatorial fashion to build silk molecules capable of fiber formation.

[0007] Silk polypeptides are characteristically composed of a repeat domain (REP) flanked by non-repetitive regions (e.g., C-terminal and N-terminal domains). In an embodiment, both the C-terminal and N-terminal domains are between 75-350 amino acids in length. The repeat domain exhibits a hierarchical architecture, as depicted in Figure 1. The repeat domain comprises a series of blocks (also called repeat units). The blocks are repeated, sometimes perfectly and sometimes imperfectly (making up a quasi-repeat domain), throughout the silk repeat domain. The length and composition of blocks varies among different silk types and across different species. Table 1 lists examples of block sequences from selected species and silk types, with further examples presented in Rising, A. et al., Spider silk proteins: recent advances in recombinant production, structure-function relationships and biomedical applications, Cell Mol. Life Sci., 68:2, pg 169-184 (2011); and Gatesy, J. et al., Extreme diversity, conservation, and convergence of spider silk fibroin sequences, Science, 291:5513, pg.2603-2605 (2001). In some cases, blocks may be arranged in a regular pattern, forming larger macro-repeats that appear multiple times (usually 2-8) in the repeat domain of the silk sequence. Repeated blocks inside a repeat domain or macro-repeat, and repeated macro- repeats within the repeat domain, may be separated by spacing elements. In some embodiments, block sequences comprise a glycine rich region followed by a polyA region. In some embodiments, short (~1-10) amino acid motifs appear multiple times inside of blocks. For the purpose of this invention, blocks from different natural silk polypeptides can be selected without reference to circular permutation (i.e., identified blocks that are otherwise similar between silk polypeptides may not align due to circular permutation). Thus, for example, a“block” of SGAGG (SEQ ID NO: 494) is, for the purposes of the present invention, the same as GSGAG (SEQ ID NO: 495) and the same as GGSGA (SEQ ID NO: 496); they are all just circular permutations of each other. The particular permutation selected for a given silk sequence can be dictated by convenience (usually starting with a G) more than anything else. Silk sequences obtained from the NCBI database can be partitioned into blocks and non-repetitive regions. Table 1: Samples of Block Sequences

[0008] Fiber-forming block copolymer polypeptides from the blocks and/or macro-repeat domains, according to certain embodiments of the invention, is described in International Publication No. WO/2015/042164, incorporated by reference. Natural silk sequences obtained from a protein database such as GenBank or through de novo sequencing are broken up by domain (N-terminal domain, repeat domain, and C-terminal domain). The N-terminal domain and C-terminal domain sequences selected for the purpose of synthesis and assembly into fibers include natural amino acid sequence information and other modifications described herein. The repeat domain is decomposed into repeat sequences containing representative blocks, usually 1-8 depending upon the type of silk, that capture critical amino acid information while reducing the size of the DNA encoding the amino acids into a readily synthesizable fragment. In some embodiments, a properly formed block copolymer polypeptide comprises at least one repeat domain comprising at least 1 repeat sequence, and is optionally flanked by an N-terminal domain and/or a C-terminal domain.

[0009] In some embodiments, a repeat domain comprises at least one repeat sequence. In some embodiments, the repeat sequence is 150-300 amino acid residues. In some embodiments, the repeat sequence comprises a plurality of blocks. In some embodiments, the repeat sequence comprises a plurality of macro-repeats. In some embodiments, a block or a macro-repeat is split across multiple repeat sequences.

[0010] In some embodiments, the repeat sequence starts with a Glycine, and cannot end with phenylalanine (F), tyrosine (Y), tryptophan (W), cysteine (C), histidine (H), asparagine (N), methionine (M), or aspartic acid (D) to satisfy DNA assembly requirements. In some embodiments, some of the repeat sequences can be altered as compared to native sequences. In some embodiments, the repeat sequencess can be altered such as by addition of a serine to the C terminus of the polypeptide (to avoid terminating in F, Y, W, C, H, N, M, or D). In some embodiments, the repeat sequence can be modified by filling in an incomplete block with homologous sequence from another block. In some embodiments, the repeat sequence can be modified by rearranging the order of blocks or macrorepeats.

[0011] In some embodiments, non-repetitive N- and C-terminal domains can be selected for synthesis. In some embodiments, N-terminal domains can be by removal of the leading signal sequence, e.g., as identified by SignalP (Peterson, T.N., et. Al., SignalP 4.0:

discriminating signal peptides from transmembrane regions, Nat. Methods, 8:10, pg.785-786 (2011).

[0012] In some embodiments, the N-terminal domain, repeat sequence, or C-terminal domain sequences can be derived from Agelenopsis aperta, Aliatypus gulosus, Aphonopelma seemanni, Aptostichus sp. AS217, Aptostichus sp. AS220, Araneus diadematus, Araneus gemmoides, Araneus ventricosus, Argiope amoena, Argiope argentata, Argiope bruennichi, Argiope trifasciata, Atypoides riversi, Avicularia juruensis, Bothriocyrtum californicum, Deinopis Spinosa, Diguetia canities, Dolomedes tenebrosus, Euagrus chisoseus,

Euprosthenops australis, Gasteracantha mammosa, Hypochilus thorelli, Kukulcania hibernalis, Latrodectus hesperus, Megahexura fulva, Metepeira grandiosa, Nephila antipodiana, Nephila clavata, Nephila clavipes, Nephila madagascariensis, Nephila pilipes, Nephilengys cruentata, Parawixia bistriata, Peucetia viridans, Plectreurys tristis,

Poecilotheria regalis, Tetragnatha kauaiensis, or Uloborus diversus.

[0087] In some embodiments, the silk polypeptide nucleotide coding sequence can be operatively linked to an alpha mating factor nucleotide coding sequence. In some embodiments, the silk polypeptide nucleotide coding sequence can be operatively linked to another endogenous or heterologous secretion signal coding sequence. In some

embodiments, the silk polypeptide nucleotide coding sequence can be operatively linked to a 3X FLAG nucleotide coding sequence. In some embodiments, the silk polypeptide nucleotide coding sequence is operatively linked to other affinity tags such as 6-8 His residues.

Silk-Like Polypeptides

[0088] In some embodiments, the P. pastoris strains disclosed herein have been modified to express a silk-like polypeptide. Methods of manufacturing preferred embodiments of silk- like polypeptides are provided in WO 2015/042164, especially at Paragraphs 114-134, incorporated herein by reference. Disclosed therein are synthetic proteinaceous copolymers based on recombinant spider silk protein fragment sequences derived from MaSp2, such as from the species Argiope bruennichi. Silk-like polypeptides are described that include two to twenty repeat units, in which a molecular weight of each repeat unit is greater than about 20 kDa. Within each repeat unit of the copolymer are more than about 60 amino acid residues that are organized into a number of“quasi-repeat units.” In some embodiments, the repeat unit of a polypeptide described in this disclosure has at least 95% sequence identity to a MaSp2 dragline silk protein sequence.

[0089] In some embodiments, each“repeat unit” of a silk-like polypeptide comprises from two to twenty“quasi-repeat” units (i.e., n3 is from 2 to 20). Quasi-repeats do not have to be exact repeats. Each repeat can be made up of concatenated quasi-repeats. Equation 1 shows the composition of a repeat unit according the present disclosure and that incorporated by reference from WO 2015/042164. Each silk-like polypeptide can have one or more repeat units as defined by Equation 1. [0090] The variable compositional element X1 (termed a“motif”) is according to any one of the following amino acid sequences shown in Equation 2 and X1 varies randomly within each quasi-repeat unit.

X ₁ = SGGQQ or GAGQQ or GQGPY or AGQQ or SQ (Equation 2)

[0091] Referring again to Equation 1, the compositional element of a quasi-repeat unit represented by“GGY-[GPG-X ₁ ] _n1 -GPS” in Equation 1 is referred to a“first region.” A quasi-repeat unit is formed, in part by repeating from 4 to 8 times the first region within the quasi-repeat unit. That is, the value of n ₁ indicates the number of first region units that are repeated within a single quasi-repeat unit, the value of n1 being any one of 4, 5, 6, 7 or 8.

The compositional element represented by“(A)n2” (i.e., a polyA sequence) is referred to as a “second region” and is formed by repeating within each quasi-repeat unit the amino acid sequence“A” n2 times. That is, the value of n2 indicates the number of second region units that are repeated within a single quasi-repeat unit, the value of n2 being any one of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20. In some embodiments, the repeat unit of a polypeptide of this disclosure has at least 95% sequence identity to a sequence containing quasi-repeats described by Equations 1 and 2. In some embodiments, the repeat unit of a polypeptide of this disclosure has at least 80%, or at least 90%, or at least 95%, or at least 99% sequence identity to a sequence containing quasi-repeats described by Equations 1 and 2.

[0092] In additional embodiments, 3“long” quasi repeats are followed by 3“short” quasi- repeat units. Short quasi- repeat units are those in which n ₁ =4 or 5. Long quasi-repeat units are defined as those in which n ₁ =6, 7 or 8. In some embodiments, all of the short quasi- repeats have the same X ₁ motifs in the same positions within each quasi-repeat unit of a repeat unit. In some embodiments, no more than 3 quasi-repeat units out of 6 share the same X1 motifs.

[0093] In additional embodiments, a repeat unit is composed of quasi-repeat units that do not use the same X1 more than two occurrences in a row within a repeat unit. In additional embodiments, a repeat unit is composed of quasi-repeat units where at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 of the quasi-repeats do not use the same X1 more than 2 times in a single quasi-repeat unit of the repeat unit.

[0094] Thus, in some embodiments, provided herein are strains of yeast that recombinantly express silk-like polypeptides with a reduced degradation to increase the amount of full- length polypeptides present in the isolated product from a cell culture. In some embodiments, the strain expressing a silk-like polypeptide is a P. pastoris strain comprises a PAS_chr4_0584 knock-out and a PAS_chr3_1157 knock-out.

Equivalents and Scope

[0095] Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments in accordance with the invention described herein. The scope of the present invention is not intended to be limited to the above Description, but rather is as set forth in the appended claims.

[0096] In the claims, articles such as“a,”“an,” and“the” may mean one or more than one unless indicated to the contrary or otherwise evident from the context. Claims or descriptions that include“or” between one or more members of a group are considered satisfied if one, more than one, or all of the group members are present in, employed in, or otherwise relevant to a given product or process unless indicated to the contrary or otherwise evident from the context. The invention includes embodiments in which exactly one member of the group is present in, employed in, or otherwise relevant to a given product or process. The invention includes embodiments in which more than one, or all of the group members are present in, employed in, or otherwise relevant to a given product or process.

[0097] It is also noted that the term“comprising” is intended to be open and permits but does not require the inclusion of additional elements or steps. When the term“comprising” is used herein, the term“consisting of” is thus also encompassed and disclosed.

[0098] Where ranges are given, endpoints are included. Furthermore, it is to be understood that unless otherwise indicated or otherwise evident from the context and understanding of one of ordinary skill in the art, values that are expressed as ranges can assume any specific value or subrange within the stated ranges in different embodiments of the invention, to the tenth of the unit of the lower limit of the range, unless the context clearly dictates otherwise.

[0099] All cited sources, for example, references, publications, databases, database entries, and art cited herein, are incorporated into this application by reference, even if not expressly stated in the citation. In case of conflicting statements of a cited source and the instant application, the statement in the instant application shall control.

[00100] Section and table headings are not intended to be limiting. EXAMPLES

[00101] Below are examples of specific embodiments for carrying out the present invention. The examples are offered for illustrative purposes only, and are not intended to limit the scope of the present invention in any way. Efforts have been made to ensure accuracy with respect to numbers used (e.g., amounts, temperatures, etc.), but some experimental error and deviation should, of course, be allowed for.

[00102] The practice of the present invention will employ, unless otherwise indicated, conventional methods of protein chemistry, biochemistry, recombinant DNA techniques and pharmacology, within the skill of the art. Such techniques are explained fully in the literature. See, e.g., T.E. Creighton, Proteins: Structures and Molecular Properties (W.H. Freeman and Company, 1993); A.L. Lehninger, Biochemistry (Worth Publishers, Inc., current addition); Sambrook, et al., Molecular Cloning: A Laboratory Manual (2nd Edition, 1989); Methods In Enzymology (S. Colowick and N. Kaplan eds., Academic Press, Inc.); Remingtonƍs Pharmaceutical Sciences, 18th Edition (Easton, Pennsylvania: Mack Publishing Company, 1990); Carey and Sundberg Advanced Organic Chemistry 3rd Ed. (Plenum Press) Vols A and B(1992).

Example 1: Production of recombinant yeast expressing 18B

[00103] First, we transformed a strain of P. pastoris to abrogate KU70 function to facilitate further editing and engineering. A HIS+ derivative of Pichia pastoris (Komagataella phaffii) strain GS115 (NRRL Y15851) was electroporated with a DNA cassette consisting of homology arms flanking a zeocin resistance marker and targeting the KU70 locus. A map of the cassette is shown in Figure 1, and sequences are provided in Table 10. Transformants were plated on YPD agar plates supplemented with zeocin. This resulted in abrogation of KU70 function.

[00104] Then, we modified this strain to express a recombinant gene encoding a silk-like polypeptide. A HIS+ derivative of Pichia pastoris (Komagataella phaffii) strain GS115 (NRRL Y15851) was transformed with a recombinant vector (SEQ ID NO: 462) to cause expression and secretion of a silk-like polypeptide (“18B”) (SEQ ID NO: 463).

Transformation was accomplished by electroporation as described in PMID 15679083, incorporated by reference herein.

[00105] Each vector includes an 18B expression cassette with the polynucleotide sequence encoding the silk-like protein in the recombinant vectors flanked by a promoter (pGCW14) and a terminator (tAOX1 pA signal). The recombinant vectors further comprised dominant resistance markers for selection of bacterial and yeast transformants, and a bacterial origin of replication. The first recombinant vector included targeting regions that directed integration of the 18B polynucleotide sequences immediately 3ƍ of the AOX2 loci in the Pichia pastoris genome. The resistance marker in the first vector conferred resistance to G418 (aka geneticin).The second recombinant vector included targeting regions that directed integration of the 18B polynucleotide sequences immediately 3ƍ of the TEF1 loci in the Pichia pastoris genome. The resistance marker in the second vector conferred resistance to Hygromycin B.

Example 2: Generating a library of single protease KO mutants

[00106] After successful transformation and secretion of 18B in a recombinant Pichia pastoris strain, 65 open reading frames (ORFs) encoding proteases were individually targeted for deletion (Table 2). Cells were transformed with vector comprising a DNA cassette with ~1150 bp homology arms flanking a nourseothricin resistance marker. A plasmid map comprising the nourseothricin resistance marker is shown in Figure 2, and sequences provided in Table 11.

[00107] Homology arms used for each target were amplified by the primers provided in Table 7, and inserted into the nourseothricin resistance plasmid. Homology arms were inserted into the nourseothricin plasmid to generate cassettes comprising a nourseothricin resistance marker flanded by 3ƍ and 5ƍ homology arms to the target protease as shown in Figure 3A and Figure 3B. In Figure 3A, the resistance cassette (Nour Resistance Cassette) is shown flanked by homology arms (HA1 and HA2). In Figure 3B, details of the

nourseothricin marker are shown, including the promoter from ILV5 gene from

Saccharomyces cerevisiae (pILV5), the Nourseothricin acetyltransferase gene from

Streptomyces noursei (nat), and the polyA signal from CYC1 gene from Saccharomyces cerevisiae.

[00108] The homology arms in each vector targeted one of the 65 desired protease loci as provided in Table 2. Transformants were plated on YPD agar plates supplemented with nourseothricin, and incubated for 48 hours at 30°C.

Table 2– Proteases targeted for deletion in P. Pastoris strain

Example 3: Testing single protease knockout clones for reduced protein degradation.

[00109] Resulting clones were inoculated into 400 ^L of Buffered Glycerol-complex Medium (BMGY) in 96-well blocks, and incubated for 48 hours at 30°C with agitation at 1,000 rpm. Following the 48-hour incubation, 4 μL of each culture was used to inoculate 400 μL of BMGY in 96-well blocks, which were then incubated for 48 hours at 30°C. Guanidine thiocyanate was added to a final concentration of 2.5M to the cell cultures to extract the recombinant protein. After a 5 minute incubation, solutions were centrifuged and the supernatant was sampled and analyzed by western blot. [00110] Western blot data for a representative clone of each protease knock-out is shown in Figure 3. Single protease deletions showed no discernable impact on the distribution of silk fragments detected via western blot.

Example 4: Generating a library of protease double knock-outs

[00111] In addition to the individual KOs, different pair-wise combinations of proteases were knocked out. These proteases were selected, in part, because they were paralogs that may have compensatory function with respect to each other.

[00112] To generate double knockouts, nourseothricin resistance was eliminated from the single protease knock-out strains produced in Example 2, and a second protease deleted by transformation with a second nourseothricin resistance cassette as provided in Example 2. Transformants were plated on YPD agar plates supplemented with nourseothricin, and incubated for 48 hours at 30°C. Double protease knock-outs tested are provided in Table 3. Table 3– Protease double KO strains of P. Pastoris expressing silk-like polypeptide

Example 5: Testing double protease knockout clones for reduced protein degradation

[00113] Resulting clones were inoculated into 400 ^L of Buffered Glycerol-complex Medium (BMGY) in 96-well blocks, and incubated for 48 hours at 30°C with agitation at 1,000 rpm. Following the 48-hour incubation, 4 μL of each culture was used to inoculate 400 μL of BMGY in 96-well blocks, which were then incubated for 48 hours at 30°C. Guanidine thiocyanate was added to a final concentration of 2.5M to the cell cultures to extract the recombinant protein. After a 5 min incubation, solutions were centrifuged and the supernatant was sampled and analyzed by western blot.

[00114] Figure 4 shows representative results from different protease double knockout strains. As shown, despite the presence of protein degradation in all single knockout strains tested, the combination of PAS_chr4_0584 + PAS_chr3_1157 protease knockout (Strain 3 from Table 3) resulted in the near-complete elimination of degradation products. None of the other combinations of proteases resulted in the elimination of degradation products.

Example 6: Additional protease knock-out strains

[00115] As shown in Examples 4 and 5, a modified Pichia pastoris cell capable of producing a desired protein (e.g., 18B) was transformed to delete proteases at

PAS_chr4_0584 and PAS_chr3_1157 to mitigate degradation of the desired protein. We further knocked out one or more additional proteases to enhance the production of full-length products and minimize degradation.

[00116] For each additional knockout, an additional protease gene was deleted from a single protease KO (1X KO), double protease KO (2X KO), triple protease KO (3X KO), or quadruple protease KO (4X KO) by transformation with a nourseothricin resistance cassette with homology arms targeting the desired gene as provided in Example 2. The protease genes knocked out in each strain are shown in Table 4:

Table 4: 2X-5X KO Strains

[00117] The resulting cells were isolated on selective media plates (by auxotrophy or antibiotic resistance marker) and individual clones were isolated for further testing.

Individual clones were tested by liquid culture assay under product protein producing conditions as follows: Isolated colonies of each strain were inoculated into 400 ^L of Buffered Glycerol-complex Medium (BMGY) in 96-well blocks, and incubated for 48 hours at 30°C with agitation at 1,000 rpm. Following the 48-hour incubation, 4 μL of each culture was used to inoculate either 400 μL of BMGY or 400 μL of YPD (Yeast Extract Peptone Dextrose Medium) in 96-well blocks, which were then incubated for 48 hours at 30°C with agitation at 1,000 rpm.

[00118] Protein expressed by the cells was isolated and analyzed for degradation as follows: Guanidine thiocyanate was added to a final concentration of 2.5M to the cell cultures to extract the recombinant protein. After a 5 min incubation, solutions were centrifuged and the supernatant was sampled and analyzed by western blot.

[00119] Figure 5 shows the results of a Western Blot of purified protein from the 2X KO, 3X KO, 4X KO and 5X KO strains inoculated in BMGY or YPD. As shown, the deletion of additional protease genes from the strain having the PAS_chr4_0584 + PAS_chr3_1157 protease knockout (Strain 3 from Table 3) resulted in the further elimination of degradation products.

OTHER EMBODIMENTS

[00120] It is to be understood that the words which have been used are words of description rather than limitation, and that changes may be made within the purview of the appended claims without departing from the true scope and spirit of the invention in its broader aspects.

[00121] While the present invention has been described at some length and with some particularity with respect to the several described embodiments, it is not intended that it should be limited to any such particulars or embodiments or any particular embodiment, but it is to be construed with references to the appended claims so as to provide the broadest possible interpretation of such claims in view of the prior art and, therefore, to effectively encompass the intended scope of the invention.

[00122] All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety. In case of conflict, the present specification, including definitions, will control. In addition, section headings, the materials, methods, and examples are illustrative only and not intended to be limiting. T _P ^C

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1 ₉ ^{2 _} _S ^_ _{5 S} ^{0 A} ₀

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c ^{7 h 0}

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2 ₄ ⁷ ₃ - _{3 6 5} ⁷ ₂ ⁷

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2 ₄

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3 ⁷

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c ₂ ¹

S ^{_ 2}

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2 ₄

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3 ⁷

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r _r

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2 ₄ ⁷ ₃ - _{3 6 5} ⁷ ₂ ⁷

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3 ⁷

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4 _{_}

h _r

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3 ⁷

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c ₇ ²

S ^_1

A ₀

P ₁ ^_ T

P ^C

2 ₄

3

3 ⁷

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c ₅ ¹

S ^{_ 2}

A ₀

P ₄ ^_ T

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2 ₄

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7 ₅

2

g c g c a a a a g a c a a g a a c g g c g g a t t g c a t g a a a a t t a c g c c c a t a c t t g t g t a g c c c a g a g g t c a c c g a t t c a g g t t a g t a a c c t c t t a t a c t c g c c c t t t c a a a a a g a c t t a a t g c a g c a g a a c a t c t a c c t a a c g a t c t t a g c g a c g a t a g a g a t g g a g g a t a t t g a t t a a t a a t c t c t a a g c g g g t a c t t g a a t a a a a t t t c a g c t a t a g a a c t a g a c g a a t c a a a g c g c g t g a g c g c g a a g t t t t t c a t c c a t t a a g a c c a c g c g t t a t c a a a a c g t g t g a a t a t a a a t t c t g t t t a c c g c g a t t t g a t t a a g g a t g c a g c a g t g a a a c a t t g a g t t t a g c t a g a a a a t c a a g a a g c a a g a c c g a g a g g c a a a t a c c a a c t c c c a t a c a a g t c g a a a c t g a g a c g c a t g g g g a t c g g a t t g t g g t a c a a a c t a g t g g a t t t t a a t g a t g c c g t t a c g t g a t t g a g g t t c g a c a a g t t a t g g g a c c g t t a a c g g t c t t t t t a t a a c g a t c t a g t c t c g g a g g t a a t g a g c c c g c c a c t a t a a g g g a t g g t g a a t t c t c a a a a a a c t a c g a t a a t a g t c t g a a a g g t t g a a g t t a a c c a c a g t g c t g g t a a t g c g a t a t t t g t t g a a g a a a a t c t a g a t a g g c c t t a a t g c g t a g a g a t a c t c a t a t a a t g a 3 ⁶ ₃ ⁷ ₃ ^{8 0} 8 5

_ ⁰

4 _{_} - r ^{3 1}

h _{r r}

c ^{h h} _c ⁷

_ _c

S _S ^{_ _} ₂

S ¹

P ^A ₇ ⁴ _P ^A ₁ ^{3 A} ₀

P ₁ ^_ T

P ^C

2 ₄

3

3 ⁷

6- ₅ ⁷

2 ⁷

a c g a a a g g t c g a a c g a g t g t c t a g t g t g t a a g t a c g t a c a g a c a t a c a c t g a c a a g a a a c g a c a a c t t g a a c c a t c a g c c a a t g c t g g a g t c g a c a c c c t c c g c c t a a a g g c a t t a c a g c t a g c g a g t a t a t t a a g a a g t a g c t t t c g c t g t a a t g a g g t a a t c t t c g a a t a g g a t c c c c g a t a c g c c t a c a g c g t t g g t t c a c c a t c t g t a c t a t t a c a g a g c a t c t a a a g t g g g t g g a t t t a a c c c t a a c t g a a c a a t t t c g a t a t a c t t c c c t t a c t a a c a t a a g a g t a a g g t t a c t c a c c c c g c a a c c c a t t g a c a c a t a g g t a t c c c c c a a c a t g c a a a t c g t a t c c c g t a c g t c g a t c a c a a t c a t a c g c a g t c c a t c t a a c c g a t g t g a g t t g a g a a g a c a a a t a t t a g t g t c t a c a a c c a a t t t a g a t a a g t t c g c a g a c a c a t c c g a c a g g t c a a a c a c g a a g a g t a t a c g c a t a t g c c c t c a a c c c c c t g c t c c g t c c a t g c c c a a c a t t g c a c g c a t a a c t a a g t t t a c g c c a t c g c a g t t a t g c a a c c c c g a t c t c c g t c a t a t c a a a a g t a g a t g t g a c t a g a t g c c c g c c t a g g t c g c c g a t g g a t t g a a c a g a c g g g t c t t a g a g g a a g c t t c a a a g t a t a g c t a a a t a t a t c t c g g c t c t a g t g c t t a t a g a a t t g t g t a a a c g t a t t g a g c g a a a a t t g c a c a g g a a a a 3 ⁹ ₄ ^{0 0} 6

4 _{_} - r ²

h _r

c ^h

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S ^_ _S ⁰

P ^A ₈ ^{6 A} ₀

P ₂ ^_ T

P ^C

2 ₄

3

3 ⁷

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7 ₅

2

t c a t g g g t a a g a a t a a a a t t a a g a g a c a g t t g c a a c a g a t c a a g g g g a g a t g g a g g c c g c t g g t g c g g t g c a g g t g a a g c a g t a g a a g a a c t t t g c c g t g t a a c t g t g a t t a t c a t c g a g g g c a t t g a a g a a a t t t t c g g g a t a g c g t a a a a t a a t t a a a a a g a a a t a a c t g t t a t t g c g g t g a t c a t a c c a c t g a g c c t a g a c g t g t c t c a g g c a c c a t c g a t c g g t t c a g a a a g c a t c g a g c t g a a c t t t t t a g t a a t t a a t c g t c t g a a c a t t g c a c t g t g a a a a a a t g c t a a a t a c t c c g g a g c t g a t t a c g g a g g c c t c t c g a g g g a a c a a g t c a c c a a a a a a a t a t t g a t c g a a a t a t a t a t a c t t t g c g g t a a c g g g g t c c a t c g g a c t t c c t a g a a t t g c g c a c a t g t c a t t c c t t a c g t t c c a g t c t a g g t a a c g a t t g t t a g a t c a g a g a a a a t c t c g c g c a g a c a g t t t g g t a t g c t g c a t t g a a t g a c g t c a t t g t t a g t t t g t a c t g c c a g t c c c a c t t t c c t a g t a g a c g a t c c a t t g a t c g t t t c c c a g t t t g g c g g a t t a t c a a c a t a g a a g t t t a c c a a c t g c c a a g g a c a t c t a g t a g a t g a a a t t a t a g t t c t t a c a c a c a t g a t t g c a t t t c g g a a c a a c t a t g c a a t a g c t t c t g t a g t c g g a c c g a a t a t a t a t t t g a g c a t c c t g c t g a g t t t c a g g c c c a a a g c g g t t a g t c t a a c a c c t a a t c a t g a c g c g a t c g g c t c t t t c a t g a c a g a t a a a a a a t a t g g c t t g g a a a t t g a a t g t t a 4 ¹ ₄ ² 3

- ⁰

2 _{_}

r ³

h _r

c ^{9 h}

_ _{5 c}

S ¹ _S ^_

P ^A ₀

2 ^_ _P ^A ₈ ⁸ T

P ^C

2 ₄

3

3 ⁷

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7 ₅

2

c t a t a g c c t t a t c g t g a g g a a t t g t a a a t a c a c a c g a c t t c a a g c t g c t c a t t c t g g a a a a a a a t a t t c a g a a t t c a c c c a a t a a g c g g c t c g g c a t t g g t a g g a c c t g c a a g t c t g c t c a t a a t c t c t g a g a t g a g t t g t t a a t g t t g a c g t c t t c t a t a c a c a a t a g a t a c a c t t a t a a t g c a t a a a c g g g c a a a g t t c c c c g a c a g c a t a a a c t g t a g a g c t a g g t t a t g a a a c a t c g c t a c t c a g a t a a a a g g g t a t c g g g a a a g a t c a g c a c g a c g g g t c g g a t c g a a g g t a a a a t a t t g g g g a t g g g t a a a g c a c a c t t a c t c t t a c a g c t c t t a a a t c a g c t t a c g c t a t g a t t a a c c a c t c t c g c a g a g c a t t t t t a t t a t c a t a t a t t a c a a c c a c t g a a g a g a t a t g t t a c c c c a g c a t a c g a t t a t a a g a a t c c a a a a c a c a t c t a t a a t g t a g t c g a g g a a t c a t t c a t a t g t c c a t a t g t a g t g c g g a g g c t a a a c g g c g c a a g a t t g t a a g a g c a a a a a c t t g a g g g c g a g a a t g a g c a a g t c a t c c c a a g a c t g a c g a t g t g g g a t g c t c a t c t g a a t c c t g a t g a c g a a a c a g a a c a a t t c a t c a g g a c c a a t a t a c t a t c t g a a c t a c a a t a t g t g a a a a c c g a t c a t g a g t t a c t c g t g t a c t a g c a a a t g t a a g t a a a a c a t a c c g a t t t g a c a a a g g g t g t c g a c a a c g t c g c a t t c t a t t t t t c g c t a c a t t t g a a c t t c c t c g a a t a a g g g t c a t a g c t a g t a g g c c a g a t a c 4 ³ ₄ ⁴ 4

_ ⁰

3 - r ^{1 h} _{r c} ^{h 8 _ _} _{c 5 S S} ² P ^A ₁ ^{9 A} ₀

P ₃ ^_ T

P ^C

2 ₄

3

3 ⁷

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c t t t t g g t c g g g g t t a t t g t a g t g c a t a a c g a t a g c t g g g t a a t g a a t t t c c a c g g c g c a g t t g g a c a g a a c a t t a t c a g c a a a t a g a t t g t t c a c t t a c g a g c g a g t a a t a t t a g a g g t c a g g g t t t t a t t t g t a t g t t c c a c t c t a a a g a c t c t t t g a c t c a a c a c t c t c g c a c a g g t t a t t a t g t t c c a a t g t g g c g t t g t a a a a a t a a c c g c t a t t g t t g a t a t c a t c a t t a g g g c a a g c g t g a g g g g c t t t c a c g g c a a t a c c g t c c a a a a c g t a a t a c c t a t g a c t a c t t g c g c a c c t a t a c c g a a a c g a c t a g c t t t t g t t c g c a t a a a t g a g a c t a a g t a a t g t t g t t t g t a t c a c g t t a c a g c a a a a c a a c g a g a t a g c a t c t c c a a g g c c t t c t c g c a a t c g g t a g a t g a a c a c c a t t g a c c a t t c c g g a a a c c t t t t a c t g a g c a a t c t a t a t a c t c c g a a c c t g a a t g t a t c g c t c a c a g a g c g t a c g c t a t a a a a t a t t t g a t t t g c t t a c g c a a g a a t g g a t c a g a t c c c t a c c t t t t c t c c g t t g g t g c a g a t g a a a c t t a t g a a a a t a t t a t a a t a t g c g c t g t a a c g g a c t g g t c g a c a g t a a a a g t t t g g t g c c a c g a t a c g t g a t c t g a t t a g c g a a t g a t g t t t t t c g c c g c c g a a a t g t g t t g a a g t a c a t t c c a c g t c a c t g a g a a g t g c a t g a a a g g a a c c c a 4 ⁵ ₄ ^{6 0} 9

4 _{_} - r ¹

h _r

c ^h

_ _c ⁶ ₆

S ^_ _S ⁰

P ^A ₁ ^{3 A} ₀

P ₁ ^_ T

P ^C

2 ₄

3

3 ⁷

6- ₅ ⁷

2 ⁷

g a a g c a c g a a g c a a a a g a c c a g a c c g g g g t g a g t a a a a t a a a c t a g t a g c g t t g g c a g c a a t a a c t t t a a t g c a a c t g a t g g a g c g t t a c g a a c a c g a c a t a g t t t g c c c t g c g a g c g g g a a t a a g t g c t g t g a c c c t c g t c g t g g t a t a g a a t g g c t a t a t c a g c a c t t t c a t c t a t t a t a g g g a a t t t t t a a t g a a t g t g t c a g c a g c t g a t g g c a c a a t t t g g a g a g a a t a g a g t a c a c a g t c a t a c g c g c t c a t t g g c a a a c t c a a a a a c t g c t t c t g a c t g a g t c g c c g a t c c a c a a t t g a a t g t a a a c t g c t t t g a g a t a c g c t a g t c c a g t c g c t g t c a t t g t t t a t g g a a t a g g t g a g a c g t a c t a g t a t a g c t a g a g t c g a t t g c t t g c t a g g a t c t g a c t a t a a g g a c a c a c c a g a t a t g a a c t a a c t t a t c g a g a c g a t a a t t g c a t a c t g a a a t c g c t g a a c t a g t c a t t g g a t t a g c t a t g a g a c c t a a a t g g t a a a a a a a a a a g a a g t a c t a a a c a a t t a a g a g a c t t a g a t t c c a t g a a c a t g c g c g c t c a c a g a a g a t a a t c g t a g t c c g t c a t g a t c t c g a g c a t c c g t t g c t a t t t t t a c t t a c a g g a g a a t g c a g c g c g t g c c t t a a t c c c a g g g t t a t a g t a c a a g t a a a t g t c a c g a c t a g a a t g t a a a a t t g g t c t c t g c a t a c t c a a t a c c c t a t t a c 4 ⁷ ₄ ^{8 2} - ¹ - h _{r r c} ^{0 h _} _{1 c} ¹

_ _{6 S} ³ _S ^{2 A} ₀

P ₂ ^{_ A} ₀

P ₃ ^_ T

P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

c a a a c g c a t a t t a a c c a c a t c a c t t c t c c c a t g a c a a t t c g a g a a a a t g t g a a a c t a c a g a c a t a a a a t a g t a c a c t c a c t a g g g a t g c a c t g t c a c a t c a a g c t t a t t c a a t g t c t c a c t a c a a t t a g a a c c c c c c g t t t a a a a t a t t a t t c g g g a a a g g c g a a c t c a t a t t c a t a c a a t t t t a a t t c t t c a t t a g a a t a c g a a c a a g t c t c t a a t g t a t g t a g t a a t a a t t a t g a a t t a t t t a t t c c t c t a g c g a a g t a g g c t t g g g a t t a g a a t a g c t t a a c t t a a t t t a a a a c c a a a g t c g t t a t a t c c c t c g g t t c g g t g t a t a a a c a t a a a g c c a g a g c t a c a g g a t c t a c a c a t a a a t a t t t a g t t g t g c a g a a c t t a t g t a c t t g g a g t a a g c g a a t g a g a g t c t c t g t c t t t c c g t a g a a c a g g a t c a t g t c t a t a g a a g t t t c t a a t g a g a t g g g a a c c c c t t c a c a g t g c a c t g t c c a a t a t t t g t g a c t a t c a g g c t g t t g t a a a t a a t g t t t a t a t g t a t t t t c a a a g t c c t t t a a a t a a t c a a a a t t t a g g t g c g c c t a c c t g a t a c c a a a a c a a g a g c c a c t g c t a c c c g g a t a a c t a t c g t t a a a c a g c a c t a a g a t g c t g c g a t a t c t c g t c c a a c a t g t c t g a a a t c t a t a g a t c c c c t t c t a t a t g c a g g a a c t t c g a g t t a a t g a g t t t t a a a t a 4 ⁹ ₅ ^{0 2} - - h _{r r} ² c ⁶ _c ^{h 5} ₄ ^{8 _} _S ^_ _{9 S} ^{3 A} ₀

P ₁ ^{_ A} ₀

P ₂ ^_ T

P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

a g a c g a g g g g g c a g a c c c c g a t t t a a t a a g a t a t t g t g c t c g t a c c a c g a t t t g c a c t t t g g a a c g c a t c c g t c c t a t a g t t t a a a t t a t a g g g a t c t t t c g c t c c c a g g t t t a t g a a t c a t a g a g a g c c c c a a a t t a a a t t a c t t a a t g t a g a g g t g g a g a a a t c t t c c a c t a a t g c a c t g t a a a t t a a t t g c c c t a t t t t g t c c g c a t a c c a t t c c t t c t t g t a c g t t t t t g c t t a a a t t a t t t t t t t a g a a t g a a t a t t c a t c c g c a t a g t a t t t t g t c a c c c a t g g c c a a c t t t g c g g g t c a t t t t t t t c t a g t a g c g t g a a t g a g a a t t a a t t c c t a a t a a g g a a a t g g a t c a g g c g a t a a a g c t t a a g c a a t g c c g a g a a a c t a a t a g a g c a c c a g g a t g c t a a g t a g g a c a c t a a t a g c t t c a a g a a a g c t g a t t t g a c a a t c g g c a c a t g t c g t t c a c g g a a g t c g c a a t a a a c t t a c g c t a t a t c t a a a t g c t t a g a c c g t a c c c t a g a a a t t c t a a a t a a a a t g g t a t a a a a c g a a c t t c a t a a a g a a c c t a a t t g t c t g c c g t c t t t g t g c a t g c a t c t c t a a t g t g a t g a g t c t t t g g t t c a t t g c a c a t a a t c t a t t g t g t a t g c t g t t a t c g a a c a a c t a t t g 5 ¹ ₅ ² ₅ ^{3 0} 8

4 _{_} - r ¹ - h _r ²

c ^h _r

_ _c ^{1 h} _c ⁷

S ^_ ₉

S ^{4 _} ₄

S ⁴

P ^A ₃ ^{5 A} ₀

P ₁ ^{_ A} ₀

P ₁ ^_ T

P ^C

2 ₄

3

3 ⁷

6- ₅ ⁷

2 ⁷

t a t c a g t a c t t t g a g a a t a t a g t t g a a t c c g t a a a g a t g g a a t t a c c t g g g a a a t a a c t t t a c t c t g a t g c g c t g t g c t t a a a g a t c c a a g t t g t a a a c t t t t g c a t g g c g t g g c a c t t t a c a t g g a a g g a a g c c t t t g g a a c t a a t g a g t c t c a a g a c a t a g c t g a a t t g c a g g g t a t t a a c g a a g g a t a g g g c c a a g t a g g g t g a t g t a g a a c t g c c a g c t g a c a t t a g a a c g a a t a a a a a a a c g t a a t t g t g a c a c a c c c t c g t a g a c g c g t g a a c c a c a g g g c g t t g g a t t g a g g a t t a t a g c a t c a a c a g c a t t t t g g a c a g a g a c g t g g g a t g a g c t a g a c a g a a g a g g a g g t a g t t g a a a t a t a a g a a g a a a g g a c a g a g c a t c g a g a g c a a a g g a c a a c a g t a g a t g a g g c a c a t a a t t c g g c t a a c a g a g t a t t g a c c t c c t g c g g g t t t g a c g a g t c a g c c g a c g c a c g c a g c t t t c g a g a c a g g t c c g g t t t a a t g t a c t a a a t t c t a t a g a g g a g a t t a a t a g g a g a g a t t t c a a g a a a t a t t g t a a g t c a t g g a g a c g t t g a a g g a c c a t a g g c a t c c t t c c a a g t a g a a g a c a c g a g a t a g a t a g a g a c g t t g a a c a c t a a a t g a c g g c g t a a g a g a a a g c g a a t a t a t t a c a c a a g a t g c a t a g a a a a t g g c a c c t a a g t a t t t a c t c t g a g a t t c t a a a g c c g a t a g a c a a c a t g a c t g t c t t a a g t c a a t a g c g a t g 5 ^{4 1} - h _r

c ₅ ³

S ^{_ 0}

A ₀

P ₃ ^_ T

P ^C

2 ₄

3

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_ ^{4 2} _{_ _} ² _{_ _} ⁰ _{_} ⁰ _{2 r} ³ - ¹ - ² _{- -} ³ - ³ _{_}

- _r ^{2 2 2} _{- _} ⁰

3 _{_} ³ - ^{3 3} _{_}

1 - ⁴ - ^{2 2} - ^{3 3} _{_} ³ _{_} ^{0 h} _{r r r} ^{2 3}

h _{r r} ³

h _{r r} ¹ _{- - r} ^{1 1} - _r ¹ - h _r ^{1 2} - _r ^{1 1} c ^{h h} _r ^{2 2} _r ^{1 1} - ¹ - ^{3 _} _c

S ^_ _{c c} ^{h h} _r

c ^{h h h} _{r r} ¹

c ^h _r ^h _{r r} ^h _{r r} ¹

S _S ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _{c c c} ^{h h} _r

S _S ^_ _S ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^h _c ^{h h} _{c c} ^{h h} _r ^h _{r r S} ^_ _c

S _S ^{_ _} _c

S _S ^_ _c

S ^_ _S ^{_ _} _c ^h _{c c} ^{h h}

_ ^_ _{c S} ^_ _c

S _{S S S} ^_ _S ^{_ P} A A ^P A ^P A ^P A A A A A A A

_ _{_ _} ^P A A

_ _{_} ^P _{_} ^P A A

_ ^{P P P} A A A

_ _{_ _ _} ^P A

_ ^P _{_} ^P _{_} ^{P P} A

_ _{_} ^P _{_} ^{P P} A A

_ _{_} ^P _{_} ^P A

_ ^{P P} A A

_ ^P A

_ _{_} ^{P P} A _ _{_} ^P _{_} ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

G C G A G C G A G G C A G T A A G C C A G A G A G C G T C A T T A T T T T T T T A C T T T T T T C A T T A C T T A T T T A T T G A T T C A T T A C T T C C T T T C G A C C G C C C G G C C G T G C G A G C G T A C G C G A G A A A C T A A A C A A C A A A G A A A T A A A A T A G A C A G C C A G T C A C A C A T C C A C A C A A G G A G T G C C T G A A T G A G T G T C T G C C T G G A A C T C A T A C A T A C A A G C A C C C A A A C A G T 4 _{8 9 1} ⁵ ₃ ⁵ _{4 1}

1 ⁴ ₀

1 ^{5 5} ₂

1 _{1 1 1} ⁵ ₅ ⁵ ₆ ⁵ _{7 8}

1 _{1 1 1} ^{5 5} ₉

1 ⁵ ₀

1 ₁ ^{6 6} ₂ ⁶ ₃ ⁶ _{4 8}

1 _{1 1} ⁶ ₅

1 ⁶ ₆

1 ⁶ _{7 2 3 1 1} ^{6 6} _{9 0 1}

1 ₁ ⁶ ₁ ^{7 7 7 7} ₄

1 _{1 1 1} ^{7 F R F R F R F R F R F R F R F R F R F R F R F R F R} A A A A A A A A A A A A A A A A A A A A A A A A A A ^F

' ^{H H} _' ^H _' ^{H H H H}

3 _' ^H

3 ^{5 5 3} _' ³ _{' '} ^H _' ^H _' ^{H H}

5 ^{5 3 3} _{' '} ^H _' ^H

5 ^{5 3} _{' '} ^H _' ^H _' ^{H H H}

3 ^{5 5 3} _{' '} ^H

3 _' ^H

5 ⁵ _{' '} ^{H H} _' ^H _' ^{H H 3 3} _' ^{5 5 3} _{' '} A

3 _' ^{H 2} ₁ ² _{1 2} ^{2 2} _{2 2} ² ₂ ² ₉ ⁵ _{9 9 6 6 6 1}

2 ⁰ _{2 0 1} ⁵ _{9 6} ² _{6 6} ² ₆

3 ^{5 5} ₆ ⁵ ₁ ¹ _{1 4 4 _} ⁰ ₀ ⁰ _{0 0} ^{5 5} ₃ ²

_ ⁰ ₁

_ _{_} ^{0 0} _{1 3}

_ ⁰ ₁ ⁰ ₃ ²

0 ₀

_ ⁰ ₀ ⁵

0 _{0 0} ^{1 1} ₁

0 _{6 6} ¹

0 ₆ ⁷ ₄

2 ^{7 7} ₄ ⁵ 2 ^{7 3} _{_} ⁰

- ³ _{_ _} ⁰

1 _{_} ⁰ _{_} ^{0 0}

1 _{_ _} ⁰ _{_} ^{0 0} ₆

_ ^{0 0} ₂ ⁰ _{2 4} 1 - D - ¹ _{_} ¹ _{_ _}

- _- ^{2 2} _{_} ² _{_ _} ⁴ _{_ _} ⁰ _{_} ^{0 3} r ¹ D ^g D D ¹

2 - ¹ - ^{1 1}

2 - ²

g - ^{4 4} - ^{4 1} _{_} ¹ _{_ 8} h _{r a a} ^{g g} - _r ² - ² _{- - r} ² - ² _{- -} ¹ _{- -} ¹ - ¹ r ¹ _{_ r c} ^{h r r} _{a a} ²

h _r ² _r ^{2 2}

h _r ² _r ^{1 1} _r ^{1 1} - ¹ - ^{0 _} _c

S ^_ _{F F} ^{r r} _r

c ^h _r ^h _{r r} ²

c ^h _r

F ^h _c ^h _{r r} ^h _{r r} ¹

h _r ^h _r ⁴ S _S ^{_ _} _F

S _S ^_ _S ^{_ _} _{c c} ^{h h}

S ^_ _c ^h _r

S _S ^_ _S ^{_ _} _{c c} ^h

S _S ^{_ _} _{c c} ^h _{c c} ^{h h} _c ^h

S _S ^{_ _} _{S S} ^_ _S ^{_ _} _{c c}

S _S ^_ _S ^{_ _} _c

S ^_ _c ^h _{c c} ^{h h}

_ ^_ _{c S} ^_ _c

S _{S S S} ^_ _S ^{_ P} A A A A ^P A A A A

_ _{_} ^P _{_} ^{P P} A A

_ _{_} ^P _{_ _} ^{P P} A A A

_ _{_} ^P _{_} ^{P P} A ^P A ^P A

_ _{_ _ _} ^{P P} A A ^P A ^P A

_ ^P A

_ _{_} ^{P P} A ^P A

_ _{_ _ _} ^P A A

_ ^P A

_ _{_} ^{P P} A _ _{_} ^P _{_} ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

3

3 ⁷

- ⁷ ₆

7 ₅

2

A G C G A G G C A G A T A G A A A G A C A G C A A G G T T A G T T G G T T C G T T C G T T C T T T C C T T T T T A T T T T A T T C C T T C A T T T A T T A C T T T C G A T C G A T C G A A C G G G C G A G C G T C C G G A A C G A A T G A A C C A A C T A A G G A A C G A A G C A A T C A A G C A G A C A C A C A G G C A G T C A G T G G T T G C G T G G G T G A G T G C T T G G T T G C C A C G C A G C C A A G C A A G C A A A C A C G C A A 7 _{5 6 8 1 8}

1 ⁷ ₇

1 ₁ ^{7 7} ₉ ⁷ ₀

1 _{1 1} ^{8 8} _{2 3 5 6 7}

1 ₁ ^{8 8} ₄

1 ₁ ⁸ ₁ ⁸ ₁ ⁸ ₁ ^{8 8} _{9 0 2 5}

1 ₁ ^{8 9} _{1 3 4}

1 ₁ ⁹ ₁ ⁹ ₁ ⁹ ₁ ^{9 9} _{6 7} ⁹ ₈ ⁹ ₉

1 ₁ ⁹ _{1 1} ⁹ ₀

1 ⁰ _{1 2 2} ^{0 F R F R F R F R R F R F R F R F R F R F R F R F R F R} A A A A A A A A A A A A A A A A A A A A A A A A A A A ^{H H}

' ^{H H H} _' ^H _' ^{H H} _' ^{H H H 5} _' ^H

3 ³ _{' '} ^{H H}

5 ⁵ _' ^{3 3} _' ^{H H}

5 _' ^H

5 ³ _{' '} ^H _' ^H

3 ^{5 5} _{' '} ^H

3 _' ^{H H} _' ^{5 3} _{' '} ^H

3 ⁵ _{' '} ^{H 5} _' ^{H 3} _{' ' '} ^{H 5 3 3} _' ^H

5 ^{5 3 3} _'

9 ₉

3 _{4 4 6 1 3} ⁷ _{9 9 2 8} ³ ₄ ⁹ _{6 6} ⁶ _{1 1} ³ _{3 3} ⁷ ₃ ^{7 7} ₂ ⁷ ₂

0 ⁰ ₈ ³ ₈ ^{9 9} ₆

5 ⁶ ₁ ⁶ _{3 3}

6 ¹ ₃ ¹ _{3 3} ^{0 0} _{3 3} ⁷ ₁ ⁷ _{2 _} ⁰ ₈

_ ⁰ _{8 8} ⁹

_ ^{0 0} ₅ ⁶

0 ₅ ^{3 3} ₃

0 ₆ ⁰ ₀ ¹ ₀ ^{1 0} _{_} ⁰ ₁ ⁰ ₁ ^{7 4} _{_} ⁰ _{_} ^{0 0} ₈

_ ⁰ ₅ ⁰ _{6 6} ³

_ ⁰ ₀ ⁰ ₀

_ ⁰ _{_ _} ⁰

- _- ^{1 1 1 1} _{_} ⁰ ₁

1 _{_ _ r} ⁴ _r ^{3 3} _{_ _} ¹

3 ^{3 3 3} _{_ _}

r ³ _{_} ^{0 0 0} _{_ _}

_ ³ _{_} ³ _{_ _} ⁴ _{_ - -} ¹ r ^h _{r r} ^{4 1 1} - h _{r r} ³ _{_}

r ³ _r ^{4 4}

h _{r r r r} ¹ - ² - ¹ - h _r ⁴

c ^h

_ _c ^h

_ _{c c} ^{h h} _r

c ^{h h h} _{r r} ³

c ^{h h h} _{r r} ¹

h _r ² _r ^{2 2} S _S ^_ _S ^_ _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _{c c c} ^{h h} _r

S _S ^_ _S ^{_ _} _{c c} ^h _{c c c} ^{h h} _r

c ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^{_ _ _ _} _{c c} ^h _r ^h _{r r S S} ^_ _{S S S S S} ^{_ _} _c ^h _c ^{h h}

S ^_ _c

S _S ^{_ _} _{c c S S} ^_ _S ^{_ P} A A A ^P A ^P A ^P A A A ^P A

_ _{_} ^{P P} A A A

_ ^P A A

_ _{_ _} ^{P P} _{_ _} ^P _{_ _} ^{P P} A ^{P P} A A A

_ _{_ _} ^P _{_ _} ^P _{_} ^P A ^P A

_ _{_} ^P A ^P A

_ _{_ _} ^P A ^P A ^P A A

_ ^P A

_ _{_ _ _} ^P _{_} ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

3

3 ⁷

- ⁷ ₆

7 ₅

2

T A G A G A G C C A G A G A G T T A G A T A G G A A G G T T A G T T T T T T C G T T T T T T A T T T T C T T G T T G G T T G G T T A T T T T T T T C C T T C G T T G C G T G C G A G C G C C C G C C C G C T C G T T C G G A A T T A A C T A A C A A A C T A A T T A A C A A A T C A G G C A G C C A G C C A T G C A G C C A C C C A G T G C T T G G G T G A A T G T G T G A G T G T G T G A C A G C C A T A C A T T C A C G C A G T C A T A C A 0 _{2 3 5 8 5}

2 ⁰ ₄

2 ₂ ^{0 0} ₆ ⁰ ₇

2 _{2 2} ^{0 0} _{9 0 2}

2 ₂ ^{0 1} ₁

2 ₂ ^{1 1} ₃

2 ¹ ₄

2 ₂ ^{1 1} _{6 7 9 2}

2 ₂ ^{1 1} ₈

2 ₂ ^{1 1} ₀

2 ² ₁

2 ₂ ^{2 2} _{3 4} ² ₅ ² _{6 7 2 2} ² _{2 2 2} ^{2 2} ₈

2 ₂ ^{2 F R F R F R F R F R F R F R F R} A A A A ^{F R F R F R F R} A A A A ^{F R F} A A A A A A A A ^{H H} A A A A A A A ^H

' ^{H H H H} _' ^H _' ^H

H _' ^{H H H}

5 _' ^H

5 ³ _{' '} ^{H H}

3 ⁵ _{' '} ^{5 3} _' A

3 ^H _{' '}

5 _' ^H

3 _' ⁵ _'

3 _{' '} ^{H H H 5 5 3} _' A A A

' _' ^H _' ^{3 H} _' ^{H 5} _' ^H

5 _' ^H

3 ³ _{' 1 1} ^{5 5 3 3} _'

7 ⁵ _' ^H

5 ^{3 6} _{6 6 6 9} ⁵ ₁ ⁵ ₁

4 ² _{7 7}

8 ⁶ ₆ ⁶ _{9 9} ⁹ ₂ ⁵ ₂ ⁵ ₄ ⁷ _{4 4 3 1} ^{2 2} ₇

6 0 ₈ ⁶ ₈ ^{9 9} ₉

2 ⁰ ₂ ⁰ ₂ ⁷ ₈ ^{7 7} ₃ ¹ _{3 3}

0 _{1 1} ²

8 _{6 _} ⁰ ₈ ⁰ _{2 2} ⁹

0 _{_} ⁰ _{_} ⁰ ₈ ⁰ _{8 8} ¹ ₅ ^{1 1}

_ ^{0 0} ₁

6 ⁸ ₆ 3 _{_} ⁰ _{_} ^{0 0} ₂

_ ⁴ _{_} ⁴ _{_}

_ ^{0 0} ₅ ⁰ _{5 5}

1 _{_ _} ⁰ r ³ _{_} ³ _{_ _} ⁰

3 - ⁴ - ^{4 0}

4 _{_ _} ⁰ _{_} ^{0 0} - ^{1 1} _{_} ⁰ ₆ ^{8 3}

h _{r r r} ^{3 3} _{_}

r ¹ - ¹ _{- _}

r _r ^{4 4} _{_} ³ _{_ _} ¹ _{- -} ¹ _{_} ⁰ _{6 c} ^{h h h} _{r r} ^{3 1}

h _{r r r} ^{1 4}

h _r ³ _r ^{3 3} _r ^{1 1} - ⁴ _{_} ^{0 _} _c ^_ _c ^_ _c ^{h h} _r

c ^{h h h} _{r r}

c ^h _r ^h _{r r} ^{h h} _{r r} ¹ _r ⁴ _{_ S S S} ^_ _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _{c c c} ^{h h}

S _S ^_ _S ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^h _{c c} ^{h h}

_ ^_ _{c c} ^h _r ^h _r ⁴ S ^_ _c

S _{S S S} ^{_ _} _c

S _S ^{_ _} _c ^h _{r c} ^{h h} S ^_ _c

S _S ^{_ _} _{c c S S} ^_ _S ^{_ P} A A A ^P A ^P A ^P A A A ^P A

_ _{_} ^{P P} A A A

_ ^P A A

_ _{_ _ _} ^{P P} _{_ _} ^P _{_ _ _} ^{P P} A

_ _{_} ^{P P} A ^P A ^P A A A

_ ^P A

_ _{_ _ _} ^{P P} A

_ _{_} ^{P P} A ^P A ^P A A _ ^P A

_ _{_ _ _} ^P _{_} ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

A A A G T T A G G C A G T A A G T G A G T A A G T T A C C T T C T T T C G T T T A T T A T T T A G T T C A T A C T T G C T T A C T T G G T T G A T T C C T T A T T T C C G T C C G C C C G T T C G T C C G G A C G A C C C G A A T T A A T T A A T T A A T T A A G A A A G G A C A C A G C C A T C C A G T C A G T C A A C C A G A C C C T G T C T G T G T G C G T G G C T G A C T G G G T A A C A G T C A T A C A T A C A A T C A C A C A T C C 2 _{9 0 2 5} ^{3 3} _{8 9 2}

2 ³ ₁

2 ₂ ^{3 3} ₃

2 ³ ₄

2 ³ _{6 7}

2 ³ _{2 2 2 2} ^{3 3} ₀

2 ⁴ ₁

2 ₂ ^{4 4} _{3 4} ⁴ ₆ ⁴ _{7 9}

2 ₂ ^{4 4} ₅

2 _{2 2} ⁴ ₈

2 ₂ ^{4 4} _{0 1 2 3 4 2 2} ⁵ ₂ ^{5 5 5 5} ₅

2 _{2 2 2} ^{5 F R F R F R F R F R F R F R R} A A A A ^{F R F R F R F R} A A A A ^{F R F R} A A A A A A A ^H _' ^H _' ^H A A A A A A A A ^H _' ^H A ^{H H H} ' ^{5 5 3 3} _' ^{H H H H} _' ^H

5 _' ^H

H _' ^H

5 ³ _' A A A

3 ^H _' 3 _{' '} ^{H H H} _' ^{H H} _{' '} ^H _' ^H

' ^{5 5 3} _' ³ _' ^H

5 ⁵ 9 _{9 9 9} ^{5 5 3} _{' '} ^H

3 ⁵ _' ⁵ _' ³ _' ³ _' ³

5 ^{5 5} ₈ ⁵ _{8 8} ⁵ _' ^H

5 ³ _'

6 _{6 6 6} ⁸ _{1 1} ⁵ _{8 8 2 2} ^{5 5} ₈

3 ₃ ^{6 6} ₆ ⁶ _{0 6} ⁰ ₁ ⁰ ₁ ^{8 8} _{8 8 9}

0 ₂ ⁵

1 _{3 3} ¹ _{0 0} ⁶ ₀ ¹ ₀ 0 _{_} ⁰ _{_} ⁰ _{3 3} ^{8 8} ₉ ¹ _{9 9}

_ ⁰ ₂

9 ^{1 1} ₉ ^{0 0} ₀ ⁰ ₃ ¹ _ ² _{_} ² _{_} ^{0 0} _{3 3} ¹ ₄ ^{1 1}

3 _{_} ⁰

4 - ² - ^{2 0} _{_} ⁰ ₄ ⁰ _{4 4} ⁰

- ³ _{_} ⁰ _{9 9} ⁰ _{_ _} ⁰ _{_} ⁰ _{3 - r} ^{2 2 2} _{- _} ³ _{_} ⁰ _{_} ^{0 0} _{_}

r ¹ - ³ _{_} ^{0 0} _{_} ^{1 1} _{_} ¹ _{_} ⁰

2 ^h _{r r r} ^{2 3} _{_}

r ³ _{_} ³ _{_ _} ³

r ¹ - ⁴ _{_ _} ⁴ _{- -} ¹ - ² _{_ c} ^{h h h} _{r r} ³

h _r ³ _r ^{3 3} - h _{c c} ^{h h h} _c ^h _r ¹ _r ^{4 4} _{r r} ^{1 1} - ¹ _{- -} ^{2 _} _c

S ^_ _c

S ^_ _c ^{h h} _r

c ^h _r ^h _{r r} ¹

c ^h _r ^h _{r r} ^h _r ¹ _r ² S ^_ _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c

S _S ^{_ _} _c

S _S ^{_ _} _c

S _S ^_ _S ^{_ _} _c ^h _c ^{h h} _c ^h _r ^h _{r r}

S ^_ _c

S _S ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^h _c ^{h h} S ^_ _c

S _S ^{_ _} _{c c S S} ^_ _S ^{_ P} A A A A ^P A ^{P P} A A A

_ _{_ _ _} ^P A

_ ^P _{_} ^P A

_ ^P A A A

_ _{_} ^P _{_} ^{P P} A

_ _{_} ^{P P} A

_ _{_} ^{P P} A A A

_ ^P A

_ _{_} ^{P P} A A

_ _{_} ^{P P} A

_ _{_} ^{P P} A A

_ ^P A

_ _{_} ^{P P} A _ _{_} ^P A _ ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

G G C A G C C A G A T A G T T A G G T A G T G A G G A T A T T T G A T T A T T T T C T T G T T T T T T T T A T A A T T A C T T C C T T T T T T T C T T C A T T T C G G A C G G A C G T A C G G C C G A A C G C G C G T T A G A A A A G A A A G A A T T A A C T A A T T A A C T A G G C A A T C A G A C A A A C A C G C A C C C A C G G T G T G T T T G A G T G G A T G G C T G C C T G C G A G G C A A C C A C A C A G C C A G A C A T G C A T T 5 _{6 7 9 2 9}

2 ⁵ ₈

2 ₂ ^{5 5} ₀

2 ⁶ ₁

2 ₂ ^{6 6} _{3 4 6}

2 ₂ ^{6 6} ₅

2 ₂ ^{6 6} ₇

2 ⁶ ₈

2 ₂ ^{6 6} _{0 1} ⁷ ₂ ⁷ _{3 6}

2 ₂ ⁷ _{2 2} ⁷ ₄

2 ⁷ ₅

2 ₂ ^{7 7} ₇ ⁷ ₈ ⁷ ₉

2 _{2 2} ⁷ ₀ ⁸ ₁ ⁸ ₂

2 _{2 2 2} ^{8 F R F R F R F R F R F R F R F R F R F R F R F} A A A A A A A A A A A A A A ^{F R F R} A A A A A A A A A

' ^{H H H} _' ^H _' ^{H H}

3 _' ^H

3 ⁵ _{' '} ^H

5 ^{3 3} _' ^{H H H}

5 ⁵ _{' '} ^H

3 ³ _{' '} ^H

5 _' ^H

5 ³ _{' '} A A A A ^{H H}

3 ^{H H H H} _' ^H _{' '} ^{H H H}

3 ⁵ _{' '} ^H

5 _' ^{H 3} _' ^H ' _{' ' '} ^{5 5 3} _' ^{3 5} _' 1 _{0 0} ¹ ₁ ^{6 6} ₁ ⁶ _{1 1 6 6 6 8 8} ^{5 5 3 3} _{1 7 7 7 3 2 5} ^{9 4 4} ₇

2 ⁰ ₂ ⁶ ₂ ⁴ ₆

5 ^{4 4 9} ₈

0 _{5 5} ⁴ ₈

3 ^{9 9 9} _{1 1 1}

3 ^{0 3} ₅ ³ _{5 5} ⁹

3 ₄ ⁹ ₄ ⁹

0 ₃

_ ⁰ ₄

2 _{_} ⁰ _{_} ^{0 0} _{_ _} ^{0 0} ₅ ⁰ _{3 3}

_ _{8 8} ³ ₈ ^{0 0 0} _{4 4} ⁴ ₄ ⁴ _{3 -} ² _{_} ³ _{_ _} ¹ _{_} ⁰ _{_} ^{0 0}

2 _{_} ^{0 0} ₄ ⁰ ₄ ^{5 2} - ³ - ^{3 3} - ¹ _{_} ² _{_ _}

- ^{0 0} ₈ ⁰ _{_ _} ¹ _{_ _} ⁰ _{_} ⁰ _{0 r} ² - ¹ _{- -} ¹

2 - ¹ - ^{2 2}

2 _{_ _} ⁰

1 _{_} ^{1 1} - ^{1 1} _{_} ¹ _{_} ^{0 h} _{r r r} ^{1 1} - _r ² - ² _{- - r} ^{4 4} _{_} ⁴ _{- -} ¹ _{- -} ¹ - ¹ _{_ r} ² _r ^{2 1} - _c ^{h h h} _{r r} ²

h _r ² _r ^{2 2}

h _{r r} ⁴ _r ^{1 1} _r ^{1 2} - ² - ^{3 h} _r

_ _{c c c} ^h _c ^h _r ^h _{r r}

S ^_ _c ^{h h} _r ^h _{r r} ^h _r

S _S ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^h _c ^{h h}

S ^_ _c

S _S ^{_ _} _{c c}

S _S ^_ _S ^{_ _} _c

S ^_ _c ^h _c ^{h h} _{c c} ^{h h} _r ^h _{r r S} ^_ _c

S _S ^{_ _} _c

S _S ^_ _c

S ^_ _S ^{_ _} _c ^h _{c c} ^{h h}

_ ^_ _{c S} ^_ _c

S _{S S S} ^_ _S ^{_ P} A A A A ^P A A A A

_ _{_} ^P _{_} ^{P P} A A

_ _{_} ^P _{_ _} ^{P P} A A

_ ^P A

_ _{_} ^{P P} A ^P A ^P A

_ _{_ _ _} ^{P P} A A A

_ _{_} ^P A

_ ^{P P} A A

_ _{_} ^P _{_} ^P A

_ ^{P P} A A

_ ^P A

_ _{_} ^{P P} A _ _{_} ^P _{_} ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

A G T T A G C T A G T T A G T A A G G G A G G T A G A T T G C T T A T T T C G T T C A T T G A T T G G T T T T T C T T T G A T T G G T T T G T T T C T T T T T T T C G T A C G T A C G G C C G T G C G A A C G A T C G C A A C G A A T T A A G A A A T G A A A A A A G T A A C C A G A C A A A C A T C C A C A C A G C C A T G C A G T G T G T G G A T G G G T G G A T G G C T G C G T G G C A A T C A T C C A T A C A G A C A T A C A T C C A G 8 _{3 4 6 9 6}

2 ⁸ ₅

2 ₂ ^{8 8} ₇

2 ⁸ ₈

2 ₂ ^{8 8} _{0 1} ⁹ ₂ ⁹ ₃ ⁹ ₄

2 ₂ ⁹ _{2 2 2} ⁹ ₅

2 ₂ ^{9 9} ₇ ⁹ ₈ ⁹ _{9 3}

2 _{2 2} ⁹ ₀

2 ⁰ ₁

3 ⁰ ₂

3 ₃ ^{0 0} ₄ ⁰ ₅ ⁰ ₆

3 _{3 3} ⁰ ₇ ⁰ ₈ ⁰ ₉

3 _{3 3 3} ^{0 R F R F R F R F R F R} A A A ^{F R F R} A A A A ^{F R F R F R F R} A A A A ^{F R F R}

' ^{H H} _' A A A A ^{H H H} A A A A A A ^{H H}

5 _' ^H

3 ³ _' ^{H H H H} _{' '} ^H _' A A

' ^{5 5 3} _' ^{3 H H} _' ^{H H} _' A A A A ' _' ^{H H H 5 3} _' ^{3 H H} _{' 3} ^{5 5} _' ^{3 3} _' ^H

3 ³ _{' '} ^H

5 ⁵ _{' '} ^H _'

3 _' ⁵

3 _' ^{H H}

3 ^{3 5} ₃

0 ⁵ _{3 5 5 5} ^{5 5} _'

9 ₉ ^{5 5} _{' ' 0 0} ^{0 0} ₅ ⁰ ₅ ⁶ _{9 9}

0 ₀ ⁵

0 _{0 0} ⁰ _{1 1} ⁰ _{1 5} ³ _{5 3 3 5} ^{6 6} _{3 3 _} ⁰ ₀

2 ^{0 0} ₂ ⁰ ₆ ^{3 0} ₃ ⁰ ₃ ⁶

0 _{5 5} ² ₃ 3 _{_} ⁰ _{_} ⁰ ₁ ^{0 3} ₅

- ³ _{_} ⁰ _{2 2}

3 _{_} ^{0 3}

_ _{6 6} ⁰ _{6 5} ⁰ ₅

5 ^{0 0} _{_} ^{0 0 2} ₂ ² ₃ 1 - ³ _{_} ^{0 0} - ³ _{_} ³ _{_} ^{0 0} ₅ ⁰ _{5 _} ¹ _{_ _ 2 r} ¹ - ³ _{_ _} ⁰

1 - ³ - ^{0 0}

3 _{_ _} ⁰ _{_} ^{0 1} - ^{1 1 1} ₂ ^{2 h} _r ¹ _r ^{3 3} _{_}

r ¹ - ¹ _{_ _}

r ^{3 4} _{_} ⁴ _{_ -} ² _{- -} ¹ _{_} ¹ _{2 c} ^{h h} _r ^h _{r r} ³

h _r ¹ _r ^{3 3}

h _{r r} ⁴ _r ^{4 2} _r ^{2 2} _{_} ³ _{_} ^{1 _} _c

S ^_ _{c c} ^{h h} _r

c ^h _r ^h _{r r}

c ^{h h} _r ^h _{r r} ^h _{r r} ³ _r ³ _{_ c S S} ^{_ _} _{c c} ^h

S _S ^{_ _} _c

S _S ^{_ _} _c ^h _{c c} ^{h h}

_ ^_ _c

S ^_ _c

S _{S S S} ^_ _S ^{_ _} _c

S ^_ _c ^h _c ^{h h} _c ^{h h} _r ^h _r ³ S ^_ _c ^{h h} _{r S S} ^{_ _} _{c c}

S _S ^{_ _} _{c c}

S _S ^_ _S ^{_ _} _c ^_ _c

S _S ^_ _c ^h S _S ^_ _S ^{_ P} A A A ^P A ^P A A A ^P A A A

_ _{_} ^P _{_ _ _} ^{P P} A A A

_ _{_} ^P _{_} ^P A

_ _{_} ^P _{_} ^P A

_ ^P _{_} ^P _{_} ^{P P} A A A

_ ^P A A A

_ _{_} ^P _{_} ^P A

_ ^P _{_} ^P _{_} ^P _{_} ^{P P} A A A A

_ ^P _{_ _} ^P _{_} ^P A

_ ^P O O O O O O O O O O O O O O O O O O O O O O O O O O O K K K K K K K K K K K K K K K K K K K K K K K K K K K T _P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

A G C G A G C C T G C G A G C C A G C T C G C G A T A C C T A A G T A C T T A A G T A G C T A T G C G G T C G C C C G T G C G A C C G T T C G C G T A G A T A T G T A C A T A T C T A G T T A G A T G A C T G A T T G G C T G A T T G A G T G A A C T C C C T A A C T G T C T A C C T A T C T A A T T C G T T A A T T A T T T A G T T C C T T C G A A A C A A C G A A A C A A C G A A C G A A T G A G T C A G C G A G T A A G G T A G G C A G T C T T A T T T T A T T T C T T A T T T G A T T A G T T C C T T C G T T C C T T C G T T A G T T C G C G A C C G G T C G T T C G G A C G A A C G A A A A C T A A G T A A C C A A G A A A G G A A A G C A A C C A T T C A A C C A G A C A A C C A C A T G A C T G A C T G C T T G T C T G A A T G A T C A C C C A A G C A A C C A C C C A G G C A A 1 _{0 1 3 6 7 8 1 2}

3 ¹ ₂

3 ₃ ^{1 1} ₄

3 ¹ ₅

3 ₃ ^{1 1 1 1} ₉

3 _{3 3} ¹ ₀

3 ₃ ² ₃ ^{2 2} ₃ ² ₅ ² ₆ ² ₈ ² ₉

3 ² ₄

3 _{3 3} ² ₇

3 ₃ ³ ₁ ³ _{2 3} ² ₀

3 _{3 3} ³ ₃

3 ₃ ^{3 F R F R F R F R F R F R F R F R} A A A A A A A A A A A A ^{F R F R} A A A A

' ^{H H H H} A A A A

5 _' ^H

5 ³ _{' '} ^H

3 _' ^H

5 ⁵ _{' '} ^{H H H H}

3 _' ^H

3 ⁵ _{' '} ^H

5 _' ^H

3 ³ _' ^{H F R} _{' '} ^{H H} ' ^{H H F R}

7 ⁵ _' ^H _{' '} ³ _' ³

5 ^{3 3} A A A A ^{5 5} _' 9 _{7 7 7} ^{H H}

5 ⁹ ₇ ⁹ ₇ ² _{7 0}

8 _' ^H _{9 9} 0 ₅ ⁹ ₅ ² ₇

3 ² ₀ ⁸ ₀

2 _{8 8 '} ^H

3 ³ _{' 2} ^{8 8} _{9 9}

2 ^{8 8} _ ⁰ ₅ ⁰ ₃ ²

0 ₃ ⁸ ₃ ⁸ ₀

9 ² ₈ ^{2 5 5} _'

1 _{_} ⁰ _{_} ⁰ ₃

_ ⁰ ₃ ⁰ ₃ ⁸

- ¹ _{_} ¹ _{_} ⁰

1 _{_} ⁰ _{_} ⁰ ₃

0 ₉ ² ₉

8 ₄ ^{0 0} _{2 2} 2 - ¹ - ¹ _{_}

- ¹ _{_} ² _{_} ⁰

_ ⁰ ₉ ^{0 0} ₄ ⁸ ₄ ⁸ _{4 _ _} ^{0 0} r ² - ² - ¹

r ^{1 1} - ² - ² _{_}

3 ³ _{_ _} ^{3 3} _{_ 1 1 1} ⁸ - ^{4 4} _{_ _}

- ^{4 4 h} _r ² _r ¹ _{- -} ²

r ^{1 2 2} - ² - h _{r r r} ^h _{r r} ^{0 0} ₁

_ ⁰ _r ^{1 1} _{- -} h _{r r} ^{1 1} c ^_ _c ^{h h} _c ^h _r

c ^h _r ^h _r ²

c ^h _r ⁰

h _{_ _} ³ _{_}

S ^_ _c

S _S ^{_ _} _c ^h

S ^_ _c

S _S ^{_ _} _c ^h _c ^h _r

S ^_ _c

S _S ^{_ _} _c ^h

S ^_ _c

S _S ^{_ _} _c ^h _c ^{3 3} - ³ _c ^{h h} _{r r c} ^{h h} S ^_ _c

S _S ^{_ _} - _{S r} ¹ - _r ^{1 1} - _r ^{1 _ _} _{c c}

S _S ^{_ P} A A A ^P A ^P A ^P A ^P A A ^h _{r S S} ^{_ P} _{c _ _ _ _ _ _} ^P A A A

_ _{_} ^P _{_} ^{P P} A A

_ _{_} ^P _{_} ^{P P} A A A ^{h h} _c ^h

P ^{P P} A A

_ _{_ _} ^P _{c c}

_ ^{_ _ _ _} _{_} ^P A

_ ^P A _ _{_} ^P O O O O O O O O O O O O O O O O _{S S S S} K K K K K K K K K K K K K K K K _P ^A _P ^{A A} _P ^A O O O O P K K K K Table 8: Forward and reverse primers for amplifying modified sequences

T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

T _P ^C

2 ₄ ⁷ ₃ - _{3 6 5} ⁷ ₂ ⁷

T _P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

g g g a c a t t g t t t a g t c t g g t a t t t a g t g a a a a c c t a a t t g c a t c c g g t a t c t t t a a g t c a g t t c a c a g c c a t a c t t a g c c a c a t c c t g c t a g g c t g t t g c a t c a t a c a g t t a g g a g g t c a c c c c t c a c t t c a c g a c a g a a c g a g t t a t t a a c a t c g t t a c a a a c c a t t t t g a c c a a c t g a c t a g g a c a g a c g a g a c a c g t c c t t c a g a a a g g t t t a c t t a a c c a g g g t g t g t a a a t a a g a g g t a a t t t g t c a a t t g c t t c t t g t a a t g c a t c t c t a t g t t g c g g g t a c a t t a t g t t c c t a t c t a t t a t t t a c t c c g a t a a t g c a c t c a a t t a t c c g c c g t t t c t t a a c c c c a t g t a a c t t a t g c c a a c t g g a a g a t c t g c a a a a a t t a a t t t c t c t g c g c a t a t t g t t t t a a a a t t c g t a g t t g c a a t a g c a a t a c g c a a c a a a c t a g t t a a t t c c t t c t t a t c t c a a t t a c c a a c a a g a g c g t a t t a g t a g t t t g a t t c t t a c t t g a t g c a a t a a a t a c g c t a g t g a g t c a g t g g a c t t t g t c a a g a g c c c a c c t a c t t a c a a c t t t g a t a c g a t a t a t t c t g a t a a g c g c c g a t a c a c g a g g c t c t a t a c a a a g a c c a c g a a g t a a a a t t c t t a c g g t t a t a c a a g c a a a 6 _{6 7}

4 ₄ ^{6 1}

A H

F ₇ ⁰

A U H K T

P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

t t c a t c t g c g t a a g c g g c g g c g c g g a g t t c t g a t c c g a c g c c c c a g a c t t t a t g a c g g a g g t t t t t t a t a t c t t a a g a g c t a t t t t g t c a t t a t t t t t g t c a t t g c c c c g c c c t c g t g c g g g g g t t g c g t a g t a g a a c t t g t g g t a t c a t g c t g g c c g c t a c a g c t a g c g a c c t c g c t t t a c g a g t a g t a t g a t g c a t g a c t t c c a a t g c a c g a t a c c g a a c g c c g c c t a c c a g t t g t a t t c a t c a c g c c c t g t a a t a t t g t t t a a a t a a c g t c g t t t g t g a t t g t c g t c t g c a t g t t c t c t g g t a c t a g c g g t g t a g c g c a a a a c a g a c t t t a a a a t t t a t a g c t t c a c t t c c t t g a a a a g c c g c g a c c t a g c g a g t t t a c c a t c a c c g c a c t a g g t a t t g a c t t c t c g c c g g a t t g c g c c a t a a t t c t t g c t c t a c t a c c t g t g c a t a g a t g t c g t t t a c t a t a c t c c t t c c a c t g c c a g a g a g c t c t c t t c a c c c g t t a c g t t c a t c t t c t c a g a t a c g t a g g t t a c c c t t c g t g t t c t c c a a a a t t a g c a t t a t t t a t c a g c t t g g g c c a g g g c c g c t g a c g g c t c t t t a a c t t a a g t c t c c g a t t c t a t t g c a t g c g g a t c a a c t t a c c t t a a c t t g t t g g t a t c c g a a g a c g t a a t t c g t t g t t g c g a a g a g t c c g a t g c g g c a g a g c a a t a t g a a g a a g g c a a c a t t c g t c t a c a g t t g g t c a g a t g g g t t c t g c c t a t t g a t a a t t g c c a t t c g a c t c t c t a t t g c g g a a c a t a g g a g a g a a g t a g g g c a g a a a a g a a g c c g g t c c t g a g g g t t c t t t g a c c t g g t t t a t c g t g a t t g g t c a g c g g t t c t g t c c t g c t c t t c t a g a g t c t c c a g 6 _{8 9 0}

4 ₄ ^{6 7} ₁ ⁷ ₃ ⁷ ₄

4 ⁷ ₂

4 _{4 4} ⁷ ₅

4 ₄ ^{7 R t} t _s 2 ^s _n ^e e _t t ^o

A _{; d} ^r

H ⁴ _S ^o ₎

c ^d

( _{e o} ^{F t} _{; 3} ^{6 0} ₅

7 V ⁷ B

2 R ^{e z} ₁ ⁿ _{a 8}

R U L ^o _{l i}

C _i ³ r ^b _i ^m _{3 o} M

p R _p ^{p h} _t Y _r ^m m _i ^{g K I} _{S o} ^p C ^e A t R ^l _o H T _P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

T _P ^C

2 ₄ ⁷ ₃ - _{3 6 5} ⁷ ₂ ⁷

T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

a a g c g c a g a g c a a c t c g t c t c c a a a c a a c a c t g t a a a a a a t g t g a g c t a g g a c t g a t c g g c a c t g c t g t t a g t a c g t a g c a t c a g t g g g c g t a a c a g c c c a c t t g c t g c t a t g t g c g a c t a t c c g c g t a t a a g g g t c t g g a c g a a c t c g c a a a c a a g g c c a c a g t t a t g c c a a t c t a g a a g g a t c g c c g g c g c g a t a c g a g a a a c c g t a g a t t c c t t t g a a a c g a t c c t g g a a g c t t c t c g t a c a t g t a a t t a a c c c a c t c t a c a c t a g a t t g g g t g a t c a c a t g t a c c t c g a g a g a t g c g a g a t g t t g t g a g t g t c g g c a a g a t a c t g c c a a a c c t g g t t a a a c c c a c c g c t c a t t c a t t g a c g t a a c t c a a c t g g c t g t c a t g c g t c g c c c c g t g a t t t t t t g a t a g g g t a a a a t g t c c a c t t c c g g t g c g g c t t t g t t g g c a c g c c c c c a t t a g t g g c t g g t t t g t t t c c t t g a t t a t t c a c c a g g a t t a c a t a g t c t a t a a t g c a c a t g a t a c t g t c a t t g g a t g t g t a t g t t a a t g g g g c g g t a a g a a c t t c a t g c t a g a c t g c t g g c g a c g c a t t g t c t a t t a g t g a g c a a c c c c t c a c a t a c t t t g g t g c g c t g a c g c t a a g c t t g g a t a a g g a t a g a t 8 _{6 4 4} ¹ 5 ⁸ _r ^m _ ⁰ A r ^{4 g} _{y c} ^{h l} _o _ _{o S} ^{m A} _{o P} H T

P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

t g a a a c a g g t c c a t t a a c c g g a g c a g a t t a a c g c a a c a g g a t t t c g t c c a t t t a a t g a g t a c t t a c c t g g c t a a g t t c t t g t c g a t g a a c t c c a g a a a t g g t c g g t g c t t c g g t g t t c t c a t t t g g c c g a c c c a a a a c a g c c t a t c a g a a a g t a a a t c c a t a a a g a g a a c t g a g a g a a t a c a a t t g c t t t a a t t a g c t t t a a g a t c a a a c g a a g t c g g a c t t t a a a g a a t t a a a c a t c g a g g c a g a g t c g g g t t g t t t a c c g c g a a t g c c a t a t t c g c a a c a c t c a a g t a t a c t a c c g t t a t g t g t t c t a a t t a c c g a c t g g c c g t c a c t t t g g a a t a a a a c t t t g c t g a g a c a a c a c t c a t c c g g c a c a t a g a t a c g c g c t g t c c g a a c g a a g t c g t g t a t c a c t c c g t a t a a a a c c c a g t c t a a a a c t t c c c a g g c t c a t c t a t g a a a a c t g c g t c c a g g g g c a c a t a c a t g a t c a a c c g a t g g a g c g g c g t c a t a g g t c t t c t a t g g g g t a a g t c a c t a c a c g c t t a t t a c c g a t g a a c c c c g g t a t a g t a c t g t t c c g a g t g t c c a a g c c g c a g t c a t a a t g t a g g c g c t g t t t c c a g g a c a g g t a t g c t g g g t g t g g t a t c c t a 8 _{7 8}

4 ₄ ⁸ 4 ²

8 ₇

5 _r ^m _{n s}

0 ^{i 5}

c ₁

_A ⁱ m

t _a ^{r 1}

r ⁴ _{y r} ^h

h _{i _}

t

h ^{g w} _y ³

c ^l _o ^o _{g r}

_ _{o e} ^{s e g}

t ^{n h}

r ^{t l} _o

o ^t _{i c}

S ^m _e

o ^u _e

o ^{s _}

g _S

A _s

P H N ^a m

c ^o _r

h _t ^a _P ^A T _P ^C

2 ₄

7 ₃

- ₃

6

5 ⁷

2 ⁷

a a a a a c c c c c a g c c a a c c c a g c g c c g a a g t t g a a a a t a c a g a c g g a t t g a c a t t g t g t a t c t t a g c t a t g c c t a a t a g g c a g a c a c t a t a c t t t t g g t g a a c g t g c t a a a g a a a c g t t g c c c t c a c c t t c a t t g g t g t g g t a a g c c a g t c a g t c c g t a c c g a t t g a c g a c a g a c t t t t g a g a t t c t t t a a g t g g g g c c a a t c t t a a c c a a a a c a c t t c g t t a g g t t a c a a g t a t t c t a g a c c c a a t g a c g g a a a t g t a t a g c c c a a g a t g a a g c t a t t g a a a a c a a g t c g g g c t c t g a t a t a g t a g c c g t g t g g t c t c a t c g a t c a a t a a g g g g a t a a a g c c t c c t a g g c t t c g t g g a c g a a g g c a a g a c t c a a t c a c c c t a a a t t c c a c c t c t t c t a c a t c c g a g a t c t a c a t c g t g t g g c t t a c t a a c t g c t g a a g t g t g t a t c c t g g c a a c a a g t t a g t c g t t t t a t t c c c g a a g t a t g g t a g t g g g a c t c t a g a g c c c g a a t c a c g t c t g t a t g a t t t a c g t t c c a t a g g g g t g c a a t t c c g c t a t t t t g c t a c c c c c c c a t c a a c g t t t g t g c t t t t g t c a t a g c g a c a a a g c a a t a c a t a a a c c a c t c g t a a a a t a a t a t a t c g a t a t g g t 8 _{9 4 7} ¹ 1 ⁵ _r ^m _ ¹ A r ^{3 g} _{y c} ^{h l} _o _ _{o S} ^{m A} _{o P} H T

P ^C

2 ₄

7 ₃

- ₃

7 ₆

7 ₅

2

a t t a a c g c a a c t a c g a c g t g t a t g t g a c t t g g t a t g a t a c c t g g c t a a g c a g g c a t t g t c a g a a g c t g a c a c a a g t c g g t g c t t c g g t t c c a c t g a t a c a g c c g g c g c c a g c a g c c t a t c a g t t t g t a g a t g g t a g t g c t t t g t g a a t a g a a t a c a a t t c g a g t c t a t a t c a a t t c t g c a c a c a g a a g t c g g a c t t t a g t c a t g c a g t g g a a g g c c c c c g a t c g g g t t g t t t a t a t g t c c a t a g t t t t a t t g a t c a t c c a a g t a t a c t a c c t c t a t g a a c t t a t a a a c c c t c g g c a c c g t c a c t t t g g t a c a g a c g c t t t t g a t g a c c c g g c a c a t c c g g c a c a t t t c a a g t t c g g g a a g t c c g g a t a g c g t g t a t c a c t c c c c g t t t c g t a a t g a a c a a g c c c a t t c a g g c t c a t c t t t a t a g t a g t a g c g c a a g g g c c g c c t c a t g a t c a a c c c a t t a a c c a a c g t a c c t a a t a a t c a t t g g g g t a a g t c g c g g a a c t a c a t a t a t a g a a c a c g g g c g g t a t a g t a c g g t g a a a a a g t g a g a t g c g a c c g a a t t a a t g t a g g c g t t a a t t c c a t g a c a c t t a t a a c a t g c g t g g t a t c c t a c c t c a c a a a c t t c c t t t g a c c t c t a t 9 _{0 1}

4 ₄ ⁹

9 ₇ ²

1 ⁵ _r ^m _{n s 2} ^{8 1} _c ⁱ

_A ⁱ m ⁰

t ^r _{_ a} ^{4 3} _r ^h

r _y ^h _{i - t}

h ^{g w} _{y g r} ¹ c ^l _o ^o

_ _o ^s _e ^{e g}

t ⁿ

S ^m _r ^t _{o i} ^h

t _{c e} ^{_ u} _e ^l

A _{o o} ^s _o

s _r ^g _{S P} H N ^a m

c _h ^o _t ^a _P ^A T _P ^C

2 ₄ ⁷ ₃ - _{3 6 5} ⁷ ₂ ⁷

T _P ^C

2 ₄

3

3 ⁷

- ⁷ ₆

7 ₅

2

g a t c g a t c a a a c a g t t a c t a c a c t a a g c c a c g t t t c t c t a a c a g t g c g c g t a c g a g g g t a a c c a t c a a c a c c g a t c c g t a t c a a t a g t a a g t a a g a a t g c g c a t t c a g c c g t c c g c a t c a t g t a c t t c a g a a t t t t g t a c a t c a g a a a t t a t a t c t g c t g c g a c c t c c c c a g c a c a g c a t g g g g c t c g a g t g g a c a c t a c c g c c c t c g t t c c t t t g c t c t c g t g c a g a a c c t g a c t t a a g t t t t t t t a c t t g g t a t g a t c c t a c a t a t t c a t a c c t g t g g c c t g a c a c a a g t c t c c a c g c c c c t t c t c c c t t t c g g c g c c a g g a a t t g a c a g a g g t a c a a t c a c a t t t g t g a a t t c a c t g c t a a a g a g t a a a t a a t g t g c a c a c a g a t a t c t a t a c c t c c t c t g t c g a t g c c c c c g a t g a t c t t t a a t a t t g c g a a c t t c c t g a t c a t c c a c t t c c a t a a a c t t g t a c g t t g t c c c t c g g c a c a a t t a a c t c t c t c c t c c t c c a g g a c c c g g c a t t a t c t a t t a a t t c t a t g c c g t g c c g g a t a g c t t c c c c c a g a c a t t t a a t g t a a t a a g c c c a t t g a a t g a t g c t c c c a a t c a t c c a t g g g c c g c c t a a g c g g c c t c g t t c g c c g t t g c c a a t a a t c a t c g c t t c a a t a t a a c t c c a g a g g t g a a c a c g g g c t a t g t a a c t g g t c c c a a a c c a t c g a c c g a a t c c a t g a g t t t g c g g t t a g g g a a g a t a a c a t g c t t a a t g g t a c t t g a g a a g g c g g t g a c c t c t a t c g g g a t a g t t c c t a t g a t t a c 9 _{2 3}

4 ₄ ^{9 8} ₉ ¹ ₉

2 ^{8 2}

0 ₂

_ _r ^{m 0}

4- A _{_ r} ^m

4

1 - A

r _y ^{g 1} _{r y}

h _c ^l _o ^{h g}

l

_ _{o c o}

_ _o

S ^m _S ^m

A _{o o}

P H ^A _P H