2XSA:
reference: Human OGA binds substrates in a conserved peptide recognition groove., Schimpl M, Schuttelkopf AW, Borodkin VS, van Aalten DM, Biochem J. 2010 Oct 25;432(1):1-7. PMID: 20863279

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