1NAO:
reference: Solution structure of an RNA.2'-O-methylated RNA hybrid duplex containing an RNA.DNA hybrid segment at the center., Nishizaki T, Iwai S, Ohtsuka E, Nakamura H, Biochemistry 1997 Mar 4;36(9):2577-85. PMID: 9054564

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