3TI9:
reference: The S1 pocket of a bacterial derived subtilisin-like protease underpins effective tissue destruction., Wong W, Wijeyewickrema LC, Kennan RM, Reeve SB, Steer DL, Reboul C, Smith AI, Pike RN, Rood JI, Whisstock JC, Porter CJ, J Biol Chem. 2011 Oct 11. PMID: 21990366

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