| 2KXM: reference: Highly modular structure and ligand binding by conformational capture in a minimalistic riboswitch., Duchardt-Ferner E, Weigand JE, Ohlenschlager O, Schmidtke SR, Suess B, Wohnert J, Angew Chem Int Ed Engl. 2010 Aug 16;49(35):6216-9. doi: 10.1002/anie.201001339. PMID: 20632338 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).