Transcription Factor E2F4 (E2F4) Antibody – Goat Polyclonal

The protein encoded by this gene is a member of the E2F family of transcription factors. The E2F family plays a crucial role in the control of cell cycle and action of tumor suppressor proteins and is also a target of the transforming proteins of small DNA tumor viruses. The E2F proteins contain several evolutionally conserved domains found in most members of the family. These domains include a DNA binding domain, a dimerization domain which determines interaction with the differentiation regulated transcription factor proteins (DP), a transactivation domain enriched in acidic amino acids, and a tumor suppressor protein association domain which is embedded within the transactivation domain. This protein binds to all three of the tumor suppressor proteins pRB, p107 and p130, but with higher affinity to the last two. It plays an important role in the suppression of proliferation-associated genes, and its gene mutation and increased expression may be associated with human cancer. [provided by RefSeq, Jul 2008]

E2F4: Transcription activator that binds DNA cooperatively with DP proteins 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 DRTF1/E2F complex functions in the control of cell-cycle progression from G1 to S phase. E2F4 binds with high affinity to RBL1 and RBL2. In some instances can also bind RB1. Belongs to the E2F/DP family.

Protein type: DNA-binding

Chromosomal Location of Human Ortholog: 16q22.1

Cellular Component: nuclear chromatin; nucleoplasm; transcription factor complex

Molecular Function: DNA binding; protein binding; protein domain specific binding; transcription factor activity; transcription factor binding

Biological Process: blood circulation; cell volume homeostasis; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; epithelial cell development; G1/S-specific transcription in mitotic cell cycle; organ morphogenesis; positive regulation of transcription from RNA polymerase II promoter; regulation of cell proliferation; transcription from RNA polymerase II promoter