6M9D:
reference: Inhibitor complexes of the Pseudomonas serine-carboxyl proteinase., Wlodawer A, Li M, Gustchina A, Dauter Z, Uchida K, Oyama H, Goldfarb NE, Dunn BM, Oda K, Biochemistry. 2001 Dec 25;40(51):15602-11. PMID: 11747435

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