1T4X:
reference: High salt solution structure of a left-handed RNA double helix., Popenda M, Milecki J, Adamiak RW, Nucleic Acids Res. 2004 Aug 3;32(13):4044-54. Print 2004. PMID: 15292450

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