How L- tryptophan-producing ability to produce and tryptophan L- using Escherichia microorganisms and this has been strengthened

摘要

The present invention relates to a method of L- tryptophan-producing ability to produce tryptophan L- using Escherichia microorganisms and which is reinforced, more particularly, suppressing and damping the regulation of the tryptophan operon is released, the anthranilate accumulation relates to a method for producing L- tryptophan using E. coli mutants and this reduced to L- tryptophan-producing ability is enhanced.