5NRB:
reference: Structural Snapshots of the Reaction Center of Family GT6 alpha1,3-Galactosyltransferase with Native Substrates. Insights into the Catalytic Mechanism of Retaining Glycosyltransferases., Guerin ME, Albesa-Jove D, Sainz-Polo MA, Marina A, Angew Chem Int Ed Engl. 2017 Sep 28. doi: 10.1002/anie.201707922. PMID: 28960760

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