5GDS:
reference: Hirunorms are true hirudin mimetics. The crystal structure of human alpha-thrombin-hirunorm V complex., De Simone G, Lombardi A, Galdiero S, Nastri F, Della Morte R, Staiano N, Pedone C, Bolognesi M, Pavone V, Protein Sci 1998 Feb;7(2):243-53. PMID: 9521099

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