1BV3:
reference: Carbonic anhydrase catalyzes cyanamide hydration to urea: is it mimicking the physiological reaction?, Briganti F, Mangani S, Scozzafava A, Vernaglione G, Supuran CT, J Biol Inorg Chem 1999 Oct;4(5):528-36. PMID: 10550681

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