| 3A3A: reference: Crystal structure of human selenocysteine tRNA., Itoh Y, Chiba S, Sekine S, Yokoyama S, Nucleic Acids Res. 2009 Oct;37(18):6259-68. Epub 2009 Aug 19. PMID: 19692584 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).