1WMI:
reference: Crystal structure of archaeal toxin-antitoxin RelE-RelB complex with implications for toxin activity and antitoxin effects., Takagi H, Kakuta Y, Okada T, Yao M, Tanaka I, Kimura M, Nat Struct Mol Biol 2005 Apr;12(4):327-31. Epub 2005 Mar 13. PMID: 15768033

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