3G0Q:
reference: Atomic substitution reveals the structural basis for substrate adenine recognition and removal by adenine DNA glycosylase., Lee S, Verdine GL, Proc Natl Acad Sci U S A. 2009 Nov 3;106(44):18497-502. Epub 2009 Oct 19. PMID: 19841264

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