AMINO ACID-PRODUCING MICROORGANISM AND METHOD OF PRODUCING AMINO ACID

摘要

An L-amino acid selected from the group consisting of L-lysine, L-threonine, L-tryptophan, L-phenylalanine, L-valine, L-leucine, L-isoleucine and L-serine is produced by culturing a microorganism, which is capable of producing the above-described L-amino acid and has been modified so as to elevate the pyruvate synthase activity or the pyruvate:NADP+ oxidoreductase activity, in a medium such as a medium containing ethanol or a fatty acid as the carbon source; thus producing and accumulating the L-amino acid as described above in the medium or within the microbial cells; and then collecting the L-amino acid from the medium or the microbial cells.