enantiomer enrichment method and stereoselective synthesis of amino acids β-

摘要

The present invention, beta - about enantiomers enrichment method and stereospecific synthesis of amino acids. The novel shows the stereoselectivity to phenylalanine · D-3--amino-3-phenyl-propanoic acid D- beta - - D- beta amino transferase, purified from a strain freshly isolated Variovorax-Paradokisasu were. New L- beta - aminotransferase was purified from a strain freshly isolated Alcaligenes eutrophus. In the presence of pyridoxal phosphate is a cofactor, amino transferase, beta or beta -D- phenylalanine L- and alanine, from 3-keto-3-phenyl-propanoic acid or glutamic acid L- - L- beta and D- - It can be used to promote stereoselective biosynthesis of phenylalanine L-.