| 4R15: reference: High-resolution crystal structure of Z-DNA in complex with Cr cations., Drozdzal P, Gilski M, Kierzek R, Lomozik L, Jaskolski M, J Biol Inorg Chem. 2015 Feb 17. PMID: 25687556 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).