2F1V:
reference: The outer membrane protein OmpW forms an eight-stranded beta-barrel with a hydrophobic channel., Hong H, Patel DR, Tamm LK, van den Berg B, J Biol Chem. 2006 Mar 17;281(11):7568-77. Epub 2006 Jan 12. PMID: 16414958

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