4X0W:
reference: Distinctive binding modes and inhibitory mechanisms of two peptidic inhibitors of urokinase-type plasminogen activator with isomeric P1 residues., Jiang L, Zhao B, Xu P, Sorensen HP, Jensen JK, Christensen A, Hosseini M, Nielsen NC, Jensen KJ, Andreasen PA, Huang M, Int J Biochem Cell Biol. 2015 May;62:88-92. doi: 10.1016/j.biocel.2015.02.016., Epub 2015 Mar 2. PMID: 25744057

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