2KX5:
reference: Essential structural requirements for specific recognition of HIV TAR RNA by peptide mimetics of Tat protein., Davidson A, Patora-Komisarska K, Robinson JA, Varani G, Nucleic Acids Res. 2010 Aug 19. PMID: 20724442

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