262D:
reference: A three-dimensional model of the Rev-binding element of HIV-1 derived from analyses of aptamers., Leclerc F, Cedergren R, Ellington AD, Nat Struct Biol. 1994 May;1(5):293-300. PMID: 7664035

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