1WVC:
reference: Kinetic and structural analysis of alpha-D-Glucose-1-phosphate cytidylyltransferase from Salmonella typhi., Koropatkin NM, Cleland WW, Holden HM, J Biol Chem. 2005 Mar 18;280(11):10774-80. Epub 2005 Jan 5. PMID: 15634670

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