| 2GUN: reference: RNA-Binding affinities and crystal structure of oligonucleotides containing five-atom amide-based backbone structures., Pallan PS, von Matt P, Wilds CJ, Altmann KH, Egli M, Biochemistry. 2006 Jul 4;45(26):8048-57. PMID: 16800629 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).