FIELD: biotechnology, microbiology, amino acids.
SUBSTANCE: aromatic L-amino acid is prepared by culturing microorganism belonging to genus Escherichia. This microorganism is modified and shows increased activity of PEP-carboxykinase. Then the accumulated amino acid is isolated from cultural fluid. The claimed invention provides preparing aromatic L-amino acids with the high effectiveness degree.
EFFECT: improved preparing method.
12 cl, 1 dwg, 2 tbl, 4 ex
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