Patent 7785860 was granted and assigned to AJINOMOTO CO., INC. on August, 2010 by the United States Patent and Trademark Office.
A method is provided for producing L-histidine using bacterium of the Enterobacteriaceae family wherein the L-amino acid productivity of said bacterium is enhanced by enhancing an activity of the AICAR transformylase-IMP cyclohydrolase encoded by the purH gene.