2XEB:
reference: Structure of the K-turn U4 RNA: a combined NMR and SANS study., Falb M, Amata I, Gabel F, Simon B, Carlomagno T, Nucleic Acids Res. 2010 May 13. PMID: 20466811

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).