1KLI:
reference: Crystal structures of uninhibited factor VIIa link its cofactor and substrate-assisted activation to specific interactions., Sichler K, Banner DW, D'Arcy A, Hopfner KP, Huber R, Bode W, Kresse GB, Kopetzki E, Brandstetter H, J Mol Biol 2002 Sep 20;322(3):591-603. PMID: 12225752

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