2DEO:
reference: Molecular Structure of a Novel Membrane Protease Specific for a Stomatin Homolog from the Hyperthermophilic Archaeon Pyrococcus horikoshii., Yokoyama H, Matsui E, Akiba T, Harata K, Matsui I, J Mol Biol. 2006 May 12;358(4):1152-64. Epub 2006 Mar 9. PMID: 16574150

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