Patent ID: 7365161

Claim:
An isolated protein comprising a tyrosine repressor of SEQ ID NO: 2 from Pantoea agglomerans consisting of mutations in said repressor's amino acid sequence at positions selected from the group consisting of (a) position 76, position 72, position 201, and position 503; (b) position 324 and position 503; (c) position 76, position 72, position 201, position 324, and position 503; and (d) position 76, position 72, position 201, and position 324, wherein said positions are as shown in SEQ ID NO: 2, and wherein said mutation at position 67 is an alanine, said mutation at position 72 is a cysteine, said mutation at position 201 is a glycine, said mutation at position 324 is an aspartic acid, and said mutation at position 503 is a threonine.