2R7G:
reference: Structure of the retinoblastoma protein bound to adenovirus E1A reveals the molecular basis for viral oncoprotein inactivation of a tumor suppressor., Liu X, Marmorstein R, Genes Dev. 2007 Nov 1;21(21):2711-6. PMID: 17974914

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).