| 4A4Z: reference: The crystal structure of S. cerevisiae Ski2, a DExH helicase associated with the cytoplasmic functions of the exosome., Halbach F, Rode M, Conti E, RNA. 2012 Jan;18(1):124-34. Epub 2011 Nov 23. PMID: 22114319 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).