2OWQ:
reference: Crystal structure of vaccinia virus uracil-DNA glycosylase reveals dimeric assembly., Schorman N, Grigorian A, Samal A, Krishnan R, Delucas L, Chattopadhyay D, BMC Struct Biol. 2007 Jul 2;7(1):45. PMID: 17605817

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