Grant GD, Brooks L 3rd, Zhang X, Mahoney JM, Martyanov V, Wood TA, Sherlock G, Cheng C, Whitfield ML.

Mol Biol Cell. 2013 Dec;24(23):3634-50. doi:10.1091/mbc.E13-05-0264

Identification of cell cycle-regulated genes periodically expressed in U2OS cells and their regulation by FOXM1 and E2F transcription factors.

The E2F4 motif activity pattern peaks in both G1 and G2 phases.