2W8H:
reference: PELDOR Spectroscopy Distance Fingerprinting of the Octameric Outer-Membrane Protein Wza from Escherichia coli., Hagelueken G, Ingledew WJ, Huang H, Petrovic-Stojanovska B, Whitfield C, Elmkami H, Schiemann O, Naismith JH, Angew Chem Int Ed Engl. 2009 Mar 17;48(16):2904-2906. PMID: 19294709

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