摘要:
There is disclosed a method for producing an L-amino acid, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine, L-tryptophan, or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of N-acetylglucosamine permease encoded by the nagE gene.
摘要:
A microorganism which has an ability to produce 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 and has been modified so that activity of pyruvate synthase or pyruvate:NADP + oxidoreductase is increased is cultured in a medium such as medium containing ethanol or an aliphatic acid as a carbon source to produce and accumulate the L-amino acid in the medium or cells, and the L-amino acid is collected from the medium or the cells.
摘要:
A method for producing an L-amino acid is described, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine, L-tryptophan, or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of a wild-type alcohol dehydrogenase encoded by the adhE gene or a mutant alcohol dehydrogenase which is resistant to aerobic inactivation.
摘要:
There is disclosed a method for producing an L-amino acid, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine, L-tryptophan, or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of N-acetylglucosamine permease encoded by the nagE gene.