1J16:
reference: Reconstructing the binding site of factor Xa in trypsin reveals ligand-induced structural plasticity., Reyda S, Sohn C, Klebe G, Rall K, Ullmann D, Jakubke HD, Stubbs MT, J Mol Biol 2003 Jan 31;325(5):963-77. PMID: 12527302

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