2XGM:
reference: Substrate and product analogues as human O-GlcNAc transferase inhibitors., Dorfmueller HC, Borodkin VS, Blair DE, Pathak S, Navratilova I, van Aalten DM, Amino Acids. 2010 Jul 17. PMID: 20640461

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