3BPQ:
reference: Crystal structure of the antitoxin-toxin protein complex RelB-RelE from Methanococcus jannaschii., Francuski D, Saenger W, J Mol Biol. 2009 Nov 6;393(4):898-908. Epub 2009 Aug 25. PMID: 19712680

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