Process for the preparation of sulphur- containing L-alpha-amino acids consisting of contacting a sulphur-containing L- or DL-alpha-amino acid amide with an aminopeptidase obtained from a culture of Pseudomonas putida or related microorganisms, such as Pseudomonas reptilivora or Pseudomonas arvilla, and isolating the resultant sulphur-containing L-alpha-amino acid, the enzymatic reaction being carried out in the presence of a hydroxylamine compound.
制备含
硫 L-
α-氨基酸的工艺,包括将含
硫的 L- 或 DL-
α-氨基酸酰胺与从假单胞菌(Pseudomonas putida)或相关微
生物,如爬行假单胞菌(Pseudomonas reptilivora)或假单胞菌(Pseudomonas arvilla)培养物中获得的
氨肽酶接触,并分离得到含
硫的 L-
α-氨基酸,酶反应在
羟胺化合物存在下进行。