2GRW:
reference: Breaking pseudo-twofold symmetry in the poliovirus 3'-UTR Y-stem by restoring Watson-Crick base pairs., Zoll J, Tessari M, Van Kuppeveld FJ, Melchers WJ, Heus HA, RNA. 2007 May;13(5):781-92. PMID: 17449731

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