| 4G3V: reference: Structural mechanism of GAF-regulated sigma(54) activators from Aquifex aeolicus., Batchelor JD, Lee PS, Wang AC, Doucleff M, Wemmer DE, J Mol Biol. 2013 Jan 9;425(1):156-70. doi: 10.1016/j.jmb.2012.10.017. Epub 2012, Nov 1. PMID: 23123379 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).