1NRP:
reference: Crystallographic structures of thrombin complexed with thrombin receptor peptides: existence of expected and novel binding modes., Mathews II, Padmanabhan KP, Ganesh V, Tulinsky A, Ishii M, Chen J, Turck CW, Coughlin SR, Fenton JW 2nd, Biochemistry 1994 Mar 22;33(11):3266-79. PMID: 8136362

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