| 4PZQ: reference: Structural basis for the identification of an i-motif tetraplex core with a parallel-duplex junction as a structural motif in CCG triplet repeats., Chen YW, Jhan CR, Neidle S, Hou MH, Angew Chem Int Ed Engl. 2014 Sep 26;53(40):10682-6. doi: 10.1002/anie.201405637. , Epub 2014 Aug 19. PMID: 25139267 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).