1BE8:
reference: Comparison of x-ray crystal structures of an acyl-enzyme intermediate of subtilisin Carlsberg formed in anhydrous acetonitrile and in water., Schmitke JL, Stern LJ, Klibanov AM, Proc Natl Acad Sci U S A 1998 Oct 27;95(22):12918-23. PMID: 9789015

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