Mutant Escherichia coli capable of enhanced L-glutamic acid production by fermentation

摘要

The present invention provides a mutant and a process for producing L-glutamic acid by fermentation using a microorganism belonging to the genus Escherichia. In the present process, L-glutamic acid is produced and accumulated in a culture medium by (A) culturing an Escherichia mutant which is deficient or low in alpha -ketoglutaric acid dehydrogenase activity, has low L-glutamic acid decomposing ability, and is capable of producing L-glutamic acid.