Patent ID: 9458206
Filing Date: 2016-10-04
CPC Classification: C07K,C12P

Claim Text:
1. A method for producing an L-amino acid comprising: a) culturing in a medium a bacterium belonging to the family Enterobacteriaceae, which is able to produce an L-amino acid, and has been modified to have a mutation in a yeaS gene selected from the group consisting of: b) collecting the L-amino acid from the medium; wherein the yeaS gene without said mutation encodes a protein selected from the group consisting of: (A) a protein comprising the amino acid sequence of SEQ ID NO: 2, and (B) a protein comprising the amino acid sequence of SEQ ID NO: 2, but wherein 1 to 10 amino acid residues are substituted, and the protein has an activity of improving an L-cysteine-producing ability in the bacterium belonging to the family Enterobacteriaceae as compared to a non-modified bacterium when expression of the protein is increased in the bacterium.