FIELD: biotechnologies.
SUBSTANCE: invention represents a method for obtaining L-aminoacid chosen from the group consisting of L-glutamine, L-glutamine acid, L-proline, L-arginine, L-citrulline and L-ornithine. The method involves growth in nutritional medium of bacterium of Escherichia family, which is modified so that expression of ycfR gene in the above bacterium is strengthened, and extraction of the above L-aminoacid from cultural liquid.
EFFECT: invention allows obtaining L-aminoacid with high efficiency degree.
4 cl, 2 dwg, 14 tbl
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