| 2B9D: reference: Structure of the human Papillomavirus E7 oncoprotein and its mechanism for inactivation of the retinoblastoma tumor suppressor., Liu X, Clements A, Zhao K, Marmorstein R, J Biol Chem. 2006 Jan 6;281(1):578-86. Epub 2005 Oct 24. PMID: 16249186 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).