Method for producing α-L-aspartyl-L-phenylalanine-&bgr;-ester and method for producing α-L-aspartyl-L-phenylalanine-α-methyl ester

摘要

A method of producing an α-L-aspartyl-L-phenylalanine-&bgr;-ester by forming the α-L-aspartyl-L-phenylalanine-&bgr;-ester from L-aspartic acid-α,&bgr;-diester and L-phenylalanine using an enzyme or enzyme-containing substance that has an ability to selectively link L-phenylalanine to an α-ester site of the L-aspartic acid-α,&bgr;-diester through a peptide bond.