2NOQ:
reference: Structure of the ribosome-bound cricket paralysis virus IRES RNA., Schuler M, Connell SR, Lescoute A, Giesebrecht J, Dabrowski M, Schroeer B, Mielke T, Penczek PA, Westhof E, Spahn CM, Nat Struct Mol Biol. 2006 Dec;13(12):1092-6. Epub 2006 Nov 19. PMID: 17115051

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