| abstract |
PROBLEM TO BE SOLVED: To provide a method for enhancing the productivity of an L-amino acid-producing strain belonging to the genus Escherichia and efficiently producing an L-amino acid using the strain. SOLUTION: b2862 and b2683, or b1242 or b124 Escherichia bacterium with enhanced L-amino acid productivity is cultured in a medium by enhancing the activity of the protein encoded by the 3434 gene, and the produced and accumulated L-amino acid is collected from the medium. Produces an L-amino acid such as L-threonine, L-valine, L-proline, L-leucine, L-methionine, or L-arginine. |