4CI7:
reference: The structure of the cysteine protease and lectin-like domains of Cwp84, a surface layer-associated protein from Clostridium difficile., Bradshaw WJ, Kirby JM, Thiyagarajan N, Chambers CJ, Davies AH, Roberts AK, Shone CC, Acharya KR, Acta Crystallogr D Biol Crystallogr. 2014 Jul 1;70(Pt 7):1983-93. doi:, 10.1107/S1399004714009997. Epub 2014 Jun 29. PMID: 25004975

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