FIELD: biotechnology, microbiology, amino acids.
SUBSTANCE: invention represents a method for preparing L-threonine or L-arginine involving culturing a modified microorganism belonging to Escherichia genus that comprises the inactivated cpxR gene, and isolation of indicated amino acid from cultural fluid. Invention provides preparing L-threonine or L-arginine with the high degree of effectiveness.
EFFECT: improved preparing method of amino acids.
3 cl, 3 tbl, 3 dwg, 13 ex
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