1DX5:
reference: Structural basis for the anticoagulant activity of the thrombin-thrombomodulin complex., Fuentes-Prior P, Iwanaga Y, Huber R, Pagila R, Rumennik G, Seto M, Morser J, Light DR, Bode W, Nature 2000 Mar 30;404(6777):518-25. PMID: 10761923

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