2CHJ:
reference: NMR solution structures of LNA (locked nucleic acid) modified quadruplexes., Nielsen JT, Arar K, Petersen M, Nucleic Acids Res. 2006 Apr 13;34(7):2006-14. Print 2006. PMID: 16614450

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