5DZQ:
reference: Structural variability of C3larvin toxin. Intrinsic dynamics of the alpha/beta fold of the C3-like group of mono-ADP-ribosyltransferase toxins., Lugo MR, Ravulapalli R, Dutta D, Rod Merrill A, J Biomol Struct Dyn. 2016 Dec;34(12):2537-2560. Epub 2016 Apr 21. PMID: 26610041

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