2QIZ:
reference: Inaugural Article: Structure and function of the yeast U-box-containing ubiquitin ligase Ufd2p., Tu D, Li W, Ye Y, Brunger AT, Proc Natl Acad Sci U S A. 2007 Oct 2;104(40):15599-606. Epub 2007 Sep 21. PMID: 17890322

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