Patent ID: 9587261
Date: 2017-03-07
CPC Classifications: C07K,C12N,C12P,H01L

Claim:
1. A recombinant microorganism of the genus Escherichia having an enhanced L-tryptophan productivity compared to the L-tryptophan productivity of a corresponding wild-type Escherichia microorganism, wherein the recombinant microorganism has a modification to a chromosomal tryptophan operon, wherein the modification is a deletion of part or all of the nucleotide sequence of SEQ ID NO: 2 in an expression regulatory region comprising the nucleotide sequence of SEQ ID NO: 1, wherein the recombinant microorganism is transformed with tryptophan operon genes trpD, trpC, trpB, and trpA for increased expression of said tryptophan operon genes as compared to the corresponding wild-type