Egr-1, Egr-2, Egr-3 and Egr-4 are nuclear transcription factors belonging to the Egr C2H2-type zinc-finger protein family and containing three C2H2-type zinc fingers. As immediate early proteins, Egr transcription factors are rapidly induced by diverse extracellular stimuli. They are subject to tight differential control through diverse mechanisms at several levels of regulation: transcriptional; translational and posttranslational (including glycosylation, phosphorylation and redox) mechanisms; and protein-protein interaction. Egr-1 binds to the DNA sequence 5'-CGCCCCCGSLC3' (Egr-site), thereby activating transcription of target genes whose products are required for mitogenisis and differentiation. Egr-2 binds specific DNA sites located in the promoter region of HoxA4. Egr-2 defects cause congenital hypomyelination neuropathy (also designated Charcot-Marie-Tooth disease) and Dejerine-Sottas neuropathology (also designated hereditary motor and sensory neuropathy III). Egr-3 is involved in muscle spindle development and is expressed in T cells 20 minutes following activation. Egr-4 binds to the Egr consensus motif GCGTGGGCG, functions as a transcriptional repressor, and displays autoregulatory activities, downregulating its own gene promoter in a dose dependent manner.
Function:
EGR4(Early Growth Response protein 4) is a zinc-finger transcription factor that activates the transcription of genes whose products are required for mitogenesis and differentiation. EGR4 is closely related to nerve growth factor-induced clone A (NGFI-A or EGR1), EGR2, and EGR3. These four early response (immediate early) proteins all contain very similar zinc-finger DNA binding domains and five highly homologous subdomains. EGR4 functionally cooperate with NFAT proteins and induce expression of IL2 and TNFalpha. Early growth response proteins (EGR) and nuclear factors of activated T cells (NFAT) form heterodimers and regulate proinflammatory cytokine gene expression.
Subcellular Location:
Nuclear
Similarity:
Belongs to the EGR C2H2-type zinc-finger protein family.
Contains 3 C2H2-type zinc fingers.
SWISS:
Q05215
Gene ID:
1961
Database links:
Entrez Gene: 1961 Human
Entrez Gene: 407155 Cow
Entrez Gene: 13656 Mouse
Entrez Gene: 25129 Rat
Omim: 128992 Human
SwissProt: Q9GL32 Cow
SwissProt: Q05215 Human
SwissProt: Q9WUF2 Mouse
SwissProt: Q00911 Rat
Unigene: 3052 Human
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