Recombinant Human Transcription factor E2F4 (E2F4)

Code CSB-YP621946HU
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Source Yeast
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Code CSB-EP621946HU
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Source E.coli
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Code CSB-EP621946HU-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP621946HU
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Source Baculovirus
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Code CSB-MP621946HU
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Source Mammalian cell
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Product Details

>85% (SDS-PAGE)
Target Names
Uniprot No.
Alternative Names
E2F 4; E2F transcription factor 4; E2F transcription factor 4 p107/p130 binding; E2F-4; E2F4; E2F4_HUMAN; p107/p130 binding protein ; Transcription factor E2F 4; Transcription factor E2F4
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Protein Length
Full Length of Mature Protein
Tag Info
The following tags are available.
N-terminal His-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose, pH 8.0
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Please contact us to get it.

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Target Background

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. Specifically required for multiciliate cell differentiation: together with MCIDAS and E2F5, binds and activate genes required for centriole biogenesis.
Gene References into Functions
  1. E2f4 forms apical cytoplasmic organizing centres for assembly and nucleation of deuterosomes. Using genetically altered mice and E2F4 mutant proteins we demonstrate that centriole amplification is crucially dependent on these organizing centres and that, without cytoplasmic E2f4, deuterosomes are not assembled, halting multiciliogenesis PMID: 28675157
  2. Studied expression of E2F4 in breast cancer patients undergoing neoadjuvant chemotherapy; found target gene-based signature of E2F4 can be used to predict neoadjuvant response. PMID: 28464832
  3. The authors found that phosphorylation of residues S650 and S975 in p107 weakens the E2F4 transactivation domain binding. PMID: 27567532
  4. E2F4 gene expression in glioblastoma. PMID: 27983535
  5. This study found evidence that the number of triplet AGC repeats in the E2F4 gene may play a role in the susceptibility to early-onset colorectal cancer. PMID: 26343152
  6. PHF8 reduces the H3K9me2 level at the E2F4 transcriptional start site, demonstrating a direct function of PHF8 in endothelial E2F4 gene regulation PMID: 26751588
  7. Authors show that BRCA1 and RAD17 genes, whose derived proteins play a pivotal role in DNA damage repair, are transcriptional targets of gain-of-function mutant p53 proteins. PMID: 25650659
  8. E2F4 promoter occupancy is globally associated with p53-repression targets, but not with p53 activation targets. PMID: 24096481
  9. cancer-associated E2F4 mutations enhance the capacity of colorectal cancer cells to grow without anchorage, thereby contributing to tumor progression. PMID: 24100580
  10. Short alleles (<13 repeats) of (AGC)n in E2F4 were less frequent in women with breast cancer than in the control sample. PMID: 23015403
  11. the loss of CDH1/E2F4 may be associated with worse clinical and pathological findings in mammary ductal carcinoma. PMID: 23007606
  12. In terminally differentiated cells, common KDM5A and E2F4 gene targets were bound by the pRB-related protein p130, a DREAM complex component. PMID: 23093672
  13. Silica could induce the high expression of cyclin D1 and CDK4 and the low expression of E2F-4, resulting in the cell cycle changes by AP-1/cyclin D1 pathway in human embryonic lung fibroblasts. PMID: 22357515
  14. data demonstrate that enforced E2F4 expression in Burkitt lymphoma (BL) cells not only diminishes E2F1 levels, but also reduces selectively the tumorigenic properties and proliferation of BL cells PMID: 22475873
  15. Our data indicate that E2F4 is required for cardiomyocyte proliferation and suggest a function for E2F4 in mitosis PMID: 19955219
  16. E2F4, PHACTR3, PRAME family member and CDH12 most probably play important role in non-small-cell lung cancer geneses PMID: 19473719
  17. regulation of expression of p130, p107 and E2F-4 in human cells PMID: 12006580
  18. data point to Tat as an adaptor protein that recruits cellular factors such as E2F-4 to exert its multiple biological activities PMID: 12055184
  19. Mutations in E2F-4 gene is associated with hereditary non-polyposis colorectal cancer PMID: 12148576
  20. EBV LMP1 blocks p16INK4 pathway by promoting nuclear export of E2F-4. PMID: 12860972
  21. E2F-a and E2F-c binding sites are involved in the TCR-induced down-regulation of ICBP90 gene transcription PMID: 15964557
  22. E2F4 is a transcriptional regulator of the cell cycle genes. PMID: 16135806
  23. Hypoxia induces substantial p130 dephosphorylation and nuclear accumulation, leading to the formation of E2F4/p130 complexes and increased occupancy of E2F4 and p130 at the RAD51 and BRCA1 promoters. PMID: 17001309
  24. in response to radiation, E2F4 becomes active in the nucleus, enforces a stable G(2) arrest by target gene repression, and thus provides increased cell survival ability by minimizing propagation of cells that have irreparable DNA damage PMID: 17043659
  25. Evolutionarily conserved multisubunit protein complex that contains p130 and E2F4 mediates the repression of cell cycle-dependent genes in quiescence. PMID: 17531812
  26. deregulated nuclear E2F4 expression induces apoptosis via multiple pathways in normal intestinal epithelial cells but not in colon cancer cells. PMID: 17656449
  27. E2F4, binding sites are located within 2 kb of a transcription start site, in both normal and tumor cells PMID: 17908821
  28. Cell cycle genes are the evolutionarily conserved targets of the E2F4 transcription factor PMID: 17957245
  29. FBI-1 is the first transcriptional repressor shown to act as a dual regulator in adipogenesis exerting repressor activities on target genes by both, direct and indirect mechanisms. PMID: 18368381
  30. E2F4 may be determinant in the promotion of proliferation of human intestinal epithelial crypt cells and colorectal cancer cells. PMID: 19562678
  31. By interacting with p130, E2F4 plays a key role in the maintenance of a stable G2 arrest. Increased E2F4 levels and its translocation to the nucleus following genotoxic stress result in downregulation of mitotic genes. PMID: 17507799
  32. Increased E2F4/p130 complex formation seen after irradiation depended on increased nuclear E2F4, dissociation of p130 from Cdk2, and p130 dephosphorylation. E2F4 siRNA prevented p130/E2F4 formation and sensitized cells to radiation-induced apoptosis. PMID: 15231644

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Subcellular Location
Protein Families
E2F/DP family
Tissue Specificity
Found in all tissue examined including heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas.
Database Links

HGNC: 3118

OMIM: 600659

KEGG: hsa:1874

STRING: 9606.ENSP00000368686

UniGene: Hs.108371

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