4JD0:
reference: Structure of the inositol-1-phosphate cytidylyltransferase from Thermotoga maritima., Kurnasov OV, Luk HJ, Roberts MF, Stec B, Acta Crystallogr D Biol Crystallogr. 2013 Sep 1;69(Pt 9):1808-17. doi:, 10.1107/S0907444913015278. Epub 2013 Aug 17. PMID: 23999304

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