2Q5T:
reference: Cholix toxin, a novel ADP-ribosylating factor from vibrio cholerae., Jorgensen R, Purdy AE, Fieldhouse RJ, Kimber MS, Bartlett DH, Rod Merrill A, J Biol Chem. 2008 Feb 25;. PMID: 18276581

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