2XNW:
reference: Novel Ligands for a Purine Riboswitch Discovered by RNA-Ligand Docking., Daldrop P, Reyes FE, Robinson DA, Hammond CM, Lilley DM, Batey RT, Brenk R, Chem Biol. 2011 Mar 25;18(3):324-35. PMID: 21439477

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