5B0O:
reference: Insight into the flagella type III export revealed by the complex structure of the type III ATPase and its regulator., Imada K, Minamino T, Uchida Y, Kinoshita M, Namba K, Proc Natl Acad Sci U S A. 2016 Mar 29;113(13):3633-8. doi:, 10.1073/pnas.1524025113. Epub 2016 Mar 16. PMID: 26984495

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