| 1QBP: reference: Crystal structure of a brominated RNA helix with four mismatched base pairs: An investigation into RNA conformational variability., Anderson AC, O'Neil RH, Filman DJ, Frederick CA, Biochemistry 1999 Sep 28;38(39):12577-85. PMID: 10504226 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).