4OGQ:
reference: Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex., Hasan SS, Cramer WA, Structure. 2014 Jul 8;22(7):1008-15. doi: 10.1016/j.str.2014.05.004. Epub 2014, Jun 12. PMID: 24931468

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