4FML:
reference: Characterization of an actin-targeting ADP-ribosyltransferase from Aeromonas hydrophila., Shniffer A, Visschedyk DD, Ravulapalli R, Suarez G, Turgeon ZJ, Petrie AA, Chopra AK, Merrill AR, J Biol Chem. 2012 Oct 26;287(44):37030-41. doi: 10.1074/jbc.M112.397612. Epub, 2012 Sep 11. PMID: 22969084

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