A Unique Domain of pRb2/p130 Acts as an Inhibitor of Cdk2

From the Departments of Pathology, Anatomy & CellBiology, and Sbarro Institute for Cancer Research andMolecular Medicine, Jefferson Medical College,Philadelphia, Pennsylvania 19107 and **Department ofBiochemistry and Molecular Biology, Jefferson Instituteof Molecular Medicine, Thomas Jefferson University,Philadelphia, Pennsylvania 19107