| 4QDC: reference: Substrate specificities and conformational flexibility of 3-ketosteroid 9alpha-hydroxylases., Penfield JS, Worrall LJ, Strynadka NC, Eltis LD, J Biol Chem. 2014 Sep 12;289(37):25523-36. doi: 10.1074/jbc.M114.575886. Epub, 2014 Jul 21. PMID: 25049233 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).