Patent ID: 8512987

Claim:
A method for producing an L-amino acid, comprising: (A) providing an Escherichia coli having an L-amino acid-producing ability and modified to increase glycerol dehydrogenase and dihydroxyacetone kinase activities, (B) culturing said Escherichia coli in a medium containing glycerol as a carbon source to produce and accumulate an L-amino acid in the medium or cells, and (C) collecting the L-amino acid from the medium or the cells, wherein said Escherichia coli is modified to increase the glycerol dehydrogenase and dihydroxyacetone kinase activities by increasing copy numbers of a glycerol dehydrogenase gene and dihydroxyacetone kinase gene, and/or by replacing a promoter for the genes with a stronger promoter, and wherein the dihydroxyacetone kinase uses ATP as a phosphate donor.