5H72:
reference: Assembly and stoichiometry of the core structure of the bacterial flagellar type III export gate complex., Fukumura T, Makino F, Dietsche T, Kinoshita M, Kato T, Wagner S, Namba K, Imada K, Minamino T, PLoS Biol. 2017 Aug 3;15(8):e2002281. doi: 10.1371/journal.pbio.2002281., eCollection 2017 Aug. PMID: 28771466

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