To provide a new method for producing amino acids, particularly an improved fermentation process for producing L-lysine.

In this fermentation process, the cell bodies of Coryneform microorganism are used that bears the polynucleotide sequence selected from the following groups: (a) the polynucleotide that has at least 70% homology to the polynucleotide encoding the specific amino acid sequence originating from Corynebacterium glutamicum; (b) the polynucleotide that encodes the polypeptide including the amino acid sequence that has at least 70% homology to the above-stated amino acid sequence; (c) the polynucleotides that are complementary to the polynucleotides (a) and (b); and (d) the polynucleotides that include at least 15 bases-linking bases in the polynucleotides (a), (b) or (c).