4OAU:
reference: Structure of Human RNase L Reveals the Basis for Regulated RNA Decay in the IFN Response., Han Y, Donovan J, Rath S, Whitney G, Chitrakar A, Korennykh A, Science. 2014 Feb 27. PMID: 24578532

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