3PRW:
reference: Augmenting beta-augmentation: structural basis of how BamB binds BamA and may support folding of outer membrane proteins., Heuck A, Schleiffer A, Clausen T, J Mol Biol. 2011 Mar 11;406(5):659-66. Epub 2011 Jan 12. PMID: 21236263

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