Enzymatic process for preparing sulfur containing l-amino acids

Details Enzymatic process for preparing sulfur containing l-amino acids Enzymatic process for preparing sulfur containing l-amino acids

C - Chemistry, Metallurgy

12

P

195/134.2

C12P 13/12 (2006.01) C12N 9/88 (2006.01)

Patent

CA 1299127

Abstract of the Disclosure L-Cysteine and/or L-cystine may be prepared by reacting a .beta.-substituted L-alanine represented by the general formula (I): Image (I) wherein X is a halogen atom, or an -OR or -SR group where R is a hydrogen atom, or an alkyl, acetyl, benzyl or sulfonic acid group, with a metal sulfide, a metal hydrosulfide, a metal polysulfide, ammonium sulfide, ammonium hydrosulfide or an ammonium polysulflde in the presence of tryptophan synthase.

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