4A6G:
reference: An Improved Racemase/Acylase Biotransformation for the Preparation of Enantiomerically Pure Amino Acids., Baxter S, Royer S, Grogan G, Brown F, Holt-Tiffin KE, Taylor IN, Fotheringham IG, Campopiano DJ, J Am Chem Soc. 2012 Nov 15. PMID: 23130969

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