1I34:
reference: A double chain reversal loop and two diagonal loops define the architecture of a unimolecular DNA quadruplex containing a pair of stacked G(syn)-G(syn)-G(anti)-G(anti) tetrads flanked by a G-(T-T) Triad and a T-T-T triple., Kuryavyi V, Majumdar A, Shallop A, Chernichenko N, Skripkin E, Jones R, Patel DJ, J Mol Biol 2001 Jun 29;310(1):181-94. PMID: 11419945

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