| 3SPA: reference: Structure of human mitochondrial RNA polymerase., Ringel R, Sologub M, Morozov YI, Litonin D, Cramer P, Temiakov D, Nature. 2011 Sep 25;478(7368):269-73. doi: 10.1038/nature10435. PMID: 21947009 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).