1OYT:
reference: A fluorine scan of thrombin inhibitors to map the fluorophilicity/fluorophobicity of an enzyme active site: evidence for C-F...C=O interactions., Olsen JA, Banner DW, Seiler P, Obst Sander U, D'Arcy A, Stihle M, Muller K, Diederich F, Angew Chem Int Ed Engl 2003 Jun 6;42(22):2507-11. PMID: 12800172

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).