4GLK:
reference: Structure and activity of AbiQ, a lactococcal endoribonuclease belonging to the type III toxin-antitoxin system., Samson JE, Spinelli S, Cambillau C, Moineau S, Mol Microbiol. 2012 Dec 20. doi: 10.1111/mmi.12129. PMID: 23279123

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