2MB2:
reference: Formation of G-Quadruplexes in Poly-G Sequences: Structure of a Propeller-Type Parallel-Stranded G-Quadruplex Formed by a G Stretch., Sengar A, Heddi B, Phan AT, Biochemistry. 2014 Dec 1. PMID: 25375976

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