5D0H:
reference: Substrate specificity determinants of class III nucleotidyl cyclases., Bharambe NG, Barathy DV, Syed W, Visweswariah SS, Colavarsigmao M, Misquith S, Suguna K, FEBS J. 2016 Aug 20. doi: 10.1111/febs.13837. PMID: 27542992

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