| 3NFH: reference: RNA polymerase I contains a TFIIF-related DNA-binding subcomplex., Geiger SR, Lorenzen K, Schreieck A, Hanecker P, Kostrewa D, Heck AJ, Cramer P, Mol Cell. 2010 Aug 27;39(4):583-94. PMID: 20797630 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).