FIELD: biotechnology, L-amino acids.
SUBSTANCE: invention relates to a method for preparing such L-amino acids as L-threonine, L-isoleucine, L-valine, L-tryptophan and L-homoserine that involves fermentation with using corynebacteria wherein a nucleotide sequence encoding glutamic acid dehydrogenase is subjected for superexpression. Invention provides elevating yield of indicated amino acids.
EFFECT: improved preparing method.
9 cl, 5 tbl, 5 ex
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