| 2FN9: reference: Ligand-induced conformational changes in a thermophilic ribose-binding protein., Cuneo MJ, Beese LS, Hellinga HW, BMC Struct Biol. 2008 Nov 19;8(1):50. PMID: 19019243 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).