2H9E:
reference: Intermolecular Interactions and Characterization of the Novel Factor Xa Exosite Involved in Macromolecular Recognition and Inhibition: Crystal Structure of Human Gla-domainless Factor Xa Complexed with the Anticoagulant Protein NAPc2 from the Hematophagous Nematode Ancylostoma caninum., Murakami MT, Rios-Steiner J, Weaver SE, Tulinsky A, Geiger JH, Arni RK, J Mol Biol. 2007 Feb 16;366(2):602-10. Epub 2006 Nov 14. PMID: 17173931

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