| 1RD3: reference: Crystal structure of anticoagulant thrombin variant E217K provides insights into thrombin allostery., Carter WJ, Myles T, Gibbs CS, Leung LL, Huntington JA, J Biol Chem 2004 Apr 9;. PMID: 15075325 |
This OCA 
Structure page
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(documentation).