5EWY:
reference: Scabin, a novel DNA-acting ADP-ribosyltransferase from Streptomyces scabies., Lyons B, Ravulapalli R, Lanoue J, Lugo MR, Dutta D, Carlin S, Merrill AR, J Biol Chem. 2016 Mar 21. pii: jbc.M115.707653. PMID: 27002155

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