Patent 7259003 was granted and assigned to AJINOMOTO CO., INC. on August, 2007 by the United States Patent and Trademark Office.
A method for producing an L-amino acid, such as L-phenylalanine or L-threonine, is provided using a bacterium belonging to the genus Escherichia, wherein the L-amino acid productivity of said bacterium is enhanced by enhancing an activity of the protein encoded by the yedA gene.