352D:
reference: The crystal structure of a parallel-stranded guanine tetraplex at 0.95 A resolution., Phillips K, Dauter Z, Murchie AI, Lilley DM, Luisi B, J Mol Biol 1997 Oct 17;273(1):171-82. PMID: 9367755

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