3RBU:
reference: Efficient and versatile one-step affinity purification of in vivo biotinylated proteins: Expression, characterization and structure analysis of recombinant human glutamate carboxypeptidase II., Tykvart J, Sacha P, Barinka C, Knedlik T, Starkova J, Lubkowski J, Konvalinka J, Protein Expr Purif. 2011 Dec 8. PMID: 22178733

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