Can stimulate E2F-dependent transcription. Binds DNA cooperatively 
with E2F family members through the E2 recognition site, 5'-TTTC[CG]CGC-3', 
found in the promoter region of a number of genes whose products are involved 
in cell cycle regulation or in DNA replication. The DP2/E2F complex functions 
in the control of cell-cycle progression from G1 to S phase. 
The E2F-1/DP complex appears to mediate both cell proliferation and apoptosis.