| 4WKJ: reference: Crystal structure of RNA-DNA duplex provides insight into conformational changes induced by RNase H binding., Davis RR, Shaban NM, Perrino FW, Hollis T, Cell Cycle. 2015 Feb 16;14(4):668-73. doi: 10.4161/15384101.2014.994996. PMID: 25664393 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).