1N8X:
reference: Structure of the intact stem and bulge of HIV-1 Psi-RNA stem-loop SL1., Lawrence DC, Stover CC, Noznitsky J, Wu Z, Summers MF, J Mol Biol 2003 Feb 14;326(2):529-42. PMID: 12559920

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