1GMJ:
reference: The structure of bovine IF(1), the regulatory subunit of mitochondrial F-ATPase., Cabezon E, Runswick MJ, Leslie AG, Walker JE, EMBO J 2001 Dec 17;20(24):6990-6. PMID: 11742976

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