FIELD: biotechnology.
SUBSTANCE: disclosed is a bacterium for producing L-amino acid. Bacterium has improved expression of the polynucleotide for encoding the protein represented by SEQ ID NO: 3, and improved expression of a polynucleotide for encoding a protein represented by SEQ ID NO: 31, and/or has base mutations in positions −45 bp and −47 bp promoter region represented by SEQ ID NO: 57.
EFFECT: invention enables to obtain amino acids, including lysine, with a high degree of efficiency.
19 cl, 8 tbl, 16 ex
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