2FD4:
reference: A bacterial inhibitor of host programmed cell death defenses is an E3 ubiquitin ligase., Janjusevic R, Abramovitch RB, Martin GB, Stebbins CE, Science. 2006 Jan 13;311(5758):222-6. Epub 2005 Dec 22. PMID: 16373536

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