2YH5:
reference: Structural basis of outer membrane protein biogenesis in bacteria., Albrecht R, Zeth K, J Biol Chem. 2011 Aug 5;286(31):27792-803. Epub 2011 May 17. PMID: 21586578

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