FIELD: biotechnology, biochemistry, enzymes, amino acids, microbiology.
SUBSTANCE: invention relates to a method for producing and preparing L-amino acids, such as L-tryptophan, L-phenylalanine, L-tyrosine and L-histidine that are prepared by culturing the modified microorganism of genus Escherichia with enhanced activity of 6-phosphogluconolactonase. The claimed invention provides preparing indicated amino acids with the high degree of effectiveness.
EFFECT: enhanced yield of amino acids.
15 cl, 9 dwg, 5 tbl, 14 ex
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