4XZJ:
reference: Characterization of Vis Toxin, a Novel ADP-Ribosyltransferase from Vibrio splendidus., Ravulapalli R, Lugo MR, Pfoh R, Visschedyk D, Poole A, Fieldhouse RJ, Pai EF, Merrill AR, Biochemistry. 2015 Sep 29;54(38):5920-36. doi: 10.1021/acs.biochem.5b00921. Epub , 2015 Sep 17. PMID: 26352925

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