1BX7:
reference: The 1.2 A crystal structure of hirustasin reveals the intrinsic flexibility of a family of highly disulphide-bridged inhibitors., Uson I, Sheldrick GM, de La Fortelle E, Bricogne G, Di Marco S, Priestle JP, Grutter MG, Mittl PR, Structure Fold Des 1999 Jan 15;7(1):55-63. PMID: 10368273

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