2K13:
reference: Structure of the leech protein saratin and characterization of its binding to collagen., Gronwald W, Bomke J, Maurer T, Domogalla B, Huber F, Schumann F, Kremer W, Fink F, Rysiok T, Frech M, Kalbitzer HR, J Mol Biol. 2008 Sep 12;381(4):913-27. Epub 2008 Jun 18. PMID: 18585393

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