3B9F:
reference: Molecular basis of thrombin recognition by protein C inhibitor revealed by the 1.6-A structure of the heparin-bridged complex., Li W, Adams TE, Nangalia J, Esmon CT, Huntington JA, Proc Natl Acad Sci U S A. 2008 Mar 25;105(12):4661-6. Epub 2008 Mar 24. PMID: 18362344

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