6VM4:
reference: Structural basis of redox modulation on chloroplast ATP synthase., Yang JH, Williams D, Kandiah E, Fromme P, Chiu PL, Commun Biol. 2020 Sep 2;3(1):482. doi: 10.1038/s42003-020-01221-8. PMID: 32879423

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