4DA5:
reference: Kinetic and mechanistic characterisation of Choline Kinase-alpha., Hudson CS, Knegtel RM, Brown K, Charlton PA, Pollard JR, Biochim Biophys Acta. 2013 Jun;1834(6):1107-16. doi:, 10.1016/j.bbapap.2013.02.008. Epub 2013 Feb 13. PMID: 23416529

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