(EP2650376) 1. A method for producing an L-amino acid comprising culturing a bacterium which belongs to the family Enterobacteriaceae and has an L-amino acid-producing ability in a medium containing a carbon source selected from a fatty acid and an alcohol, and collecting the L-amino acid from the medium, wherein the intracellular hydrogen peroxide concentration of the bacterium is reduced by: subjecting the bacterium to a modification selected from the group consisting of enhancement of oxyS gene expression, enhancement of fixABC gene expression, and combination thereof; and/or adding thiourea to the medium. 2. The method according to any one of claim 1, wherein the bacterium belongs to the genus Escherichia, Pantoea, or Enterobacter. 3. The method according to claim 2, wherein the bacterium is Escherichia coli, Pantoea ananatis, or Enterobacter aerogenes. 4. The method according to any one of claims 1 to 3, wherein the oxyS gene encodes RNA having the nucleotide sequence of SEQ ID NO: 9, or a conservative variant thereof. 5. The method according to any one of claims 1 to 4, wherein the fixABC genes encode proteins having the amino acid sequences of SEQ ID NOS: 11, 13, and 15, or a conservative variant thereof. 6. The method according to any one of claims 1 to 5, wherein the carbon source is a fatty acid. 7. The method according to claim 6, wherein the fatty acid is oleic acid. 8. The method according to claim 6, wherein the fatty acid is a mixture of fatty acids derived from a fat or oil. 9. The method according to any one of claims 1 to 5, wherein the carbon source is an alcohol. 10. The method according to claim 9, wherein the alcohol is glycerol. 11. The method according to claim 9, wherein the alcohol is ethanol. 12. The method according to any one of claims 1 to 5, wherein the carbon source is a mixture of a fatty acid and glycerol obtained by hydrolyzing a fat or oil. 13. The method according to claim 11, wherein the bacterium is Escherichia coli, and has been modified so that it can aerobically utilize ethanol. 14. The method according to any one of claims 1 to 13, wherein the L-amino acid is L-lysine. 15. The method according to claim 14, wherein activity or activities of one or more kinds of enzymes selected from the group consisting of dihydrodipicolinate reductase, diaminopimelate decarboxylase, diaminopimelate dehydrogenase, phosphoenolpyruvate carboxylase, aspartate aminotransferase, diaminopimelate epimerase, aspartate semialdehyde dehydrogenase, tetrahydrodipicolinate succinylase, and succinyldiaminopimelate deacylase are enhanced, and/or activity of lysine decarboxylase is attenuated.
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