| 4OO8: reference: Crystal structure of Cas9 in complex with guide RNA and target DNA., Nishimasu H, Ran FA, Hsu PD, Konermann S, Shehata SI, Dohmae N, Ishitani R, Zhang F, Nureki O, Cell. 2014 Feb 27;156(5):935-49. doi: 10.1016/j.cell.2014.02.001. Epub 2014 Feb, 13. PMID: 24529477 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).