4NQK:
reference: Structural basis for ubiquitin-mediated antiviral signal activation by RIG-I., Peisley A, Wu B, Xu H, Chen ZJ, Hur S, Nature. 2014 May 1;509(7498):110-4. doi: 10.1038/nature13140. Epub 2014 Mar 2. PMID: 24590070

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