2CLY:
reference: On the structure of the stator of the mitochondrial ATP synthase., Dickson VK, Silvester JA, Fearnley IM, Leslie AG, Walker JE, EMBO J. 2006 Jun 21;25(12):2911-8. Epub 2006 Jun 8. PMID: 16791136

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