1JOF:
reference: The structure of Neurospora crassa 3-carboxy-cis,cis-muconate lactonizing enzyme, a beta propeller cycloisomerase., Kajander T, Merckel MC, Thompson A, Deacon AM, Mazur P, Kozarich JW, Goldman A, Structure (Camb) 2002 Apr;10(4):483-92. PMID: 11937053

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