3VEX:
reference: The O-Carbamoyltransferase TobZ Catalyzes an Ancient Enzymatic Reaction., Parthier C, Gorlich S, Jaenecke F, Breithaupt C, Brauer U, Fandrich U, Clausnitzer D, Wehmeier UF, Bottcher C, Scheel D, Stubbs MT, Angew Chem Int Ed Engl. 2012 Mar 1. doi: 10.1002/anie.201108896. PMID: 22383337

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