2AQY:
reference: (3 + 1) Assembly of three human telomeric repeats into an asymmetric dimeric G-quadruplex., Zhang N, Phan AT, Patel DJ, J Am Chem Soc. 2005 Dec 14;127(49):17277-85. PMID: 16332077

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