| 4V7I: reference: Regulation of the protein-conducting channel by a bound ribosome., Gumbart J, Trabuco LG, Schreiner E, Villa E, Schulten K, Structure. 2009 Nov 11;17(11):1453-64. PMID: 19913480 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).