4A2Q:
reference: Structural Basis for the Activation of Innate Immune Pattern-Recognition Receptor RIG-I by Viral RNA., Kowalinski E, Lunardi T, McCarthy AA, Louber J, Brunel J, Grigorov B, Gerlier D, Cusack S, Cell. 2011 Oct 14;147(2):423-35. PMID: 22000019

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