1LHD:
reference: Kinetic and crystallographic studies of thrombin with Ac-(D)Phe-Pro-boroArg-OH and its lysine, amidine, homolysine, and ornithine analogs., Weber PC, Lee SL, Lewandowski FA, Schadt MC, Chang CW, Kettner CA, Biochemistry 1995 Mar 21;34(11):3750-7. PMID: 7893672

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