2WB5:
reference: GlcNAcstatins are nanomolar inhibitors of human O-GlcNAcase inducing cellular hyper-O-GlcNAcylation., Dorfmueller HC, Borodkin VS, Schimpl M, van Aalten DM, Biochem J. 2009 Mar 10. PMID: 19275764

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