FIELD: biotechnology.
SUBSTANCE: polypeptide is proposed that is involved in the production of L-valine, consisting of the amino acid sequence represented by SEQ ID NO: 1, in which arginine being the amino acid corresponding to position 4 of SEQ ID NO: 3 is replaced by histidine. Also proposed are the following: a polynucleotide encoding the specified polypeptide, the microorganism Corynebacterium glutamicum producing L-valine and containing the said polypeptide or polynucleotide encoding the said polypeptide, and a method for producing of L-valine.
EFFECT: increasing the yield of L-valine.
5 cl, 1 dwg, 3 tbl, 3 ex
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