3Q1G:
reference: Structure and Mechanism of the Diiron Benzoyl-Coenzyme A Epoxidase BoxB., Rather LJ, Weinert T, Demmer U, Bill E, Ismail W, Fuchs G, Ermler U, J Biol Chem. 2011 Aug 19;286(33):29241-8. Epub 2011 Jun 1. PMID: 21632537

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