Title:
【発明の名称】全長cDNAクローニングのための方法及び組成物
Document Type and Number:
Japanese Patent JP2000502905
Kind Code:
A
Abstract:
Described are compositions and methods which allow for the efficient addition of a defined sequence at the 3'-end of a full-length cDNA in the course of first-strand cDNA synthesis from an mRNA template. A cDNA synthesis primer that is capable of annealing to mRNA is used to prime the first strand synthesis reaction. An oligonucleotide that is linked to the 5'-end of the mRNA serves as a short, extended template such that when the reverse transcriptase enzyme reaches the 5'-end of the mRNA, the enzyme switches templates and proceeds to transcribe through the end of the linked oligonucleotide. As a result, the single-stranded cDNA product which corresponds to the full-length mRNA, will have at the 3'-end a defined sequence which is complementary to the linked oligonucleotide. A conservative element in the oligonucleotide sequence responsible for this reaction can include 3 to 5 guanylic acid residues at the 3'-end of the oligonucleotide. The subject invention provides for the increased synthesis of full-length cDNA from mRNA templates. The full-length cDNA prepared according to the present invention can then be amplified using PCR or cloned using standard procedures.
Inventors:
Chien chik, alex
Jue, york
Diachenko, Luda
Sea bat, pole
Jue, york
Diachenko, Luda
Sea bat, pole
Application Number:
JP52464597A
Publication Date:
March 14, 2000
Filing Date:
January 03, 1997
Export Citation:
Assignee:
Clontech Laboratories, Inc.
International Classes:
C12N15/09; C12N15/10; C12Q1/68; (IPC1-7): C12Q1/68; C12N15/09
Attorney, Agent or Firm:
Morio Sada