6MXQ:
reference: Structure of the RNA Specialized Translation Initiation Element that Recruits eIF3 to the 5'-UTR of c-Jun., Walker MJ, Shortridge MD, Albin DD, Cominsky LY, Varani G, J Mol Biol. 2020 Mar 27;432(7):1841-1855. doi: 10.1016/j.jmb.2020.01.001. Epub, 2020 Jan 14. PMID: 31953146

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