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4E-BP1 / EIF4EBP1 Antibody, Mouse MAb

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Human 4E-BP1/EIF4EBP1 Antibody Product Information
Immunogen:Recombinant Human 4E-BP1 / EIF4EBP1 Protein (Catalog#10022-H07E)
Clone ID:5F3G9
Ig Type:Mouse IgG1
Formulation:0.2 μm filtered solution in PBS with 5% trehalose
Preparation:This antibody was produced from a hybridoma resulting from the fusion of a mouse myeloma with B cells obtained from a mouse immunized with purified, recombinant Human 4E-BP1 / EIF4EBP1 (rh 4E-BP1 / EIF4EBP1; Catalog#10022-H07E; Ser 2-Ile 118; NP_004086.1). The IgG fraction of the cell culture supernatant was purified by Protein A affinity chromatography .
Human 4E-BP1/EIF4EBP1 Antibody Usage Guide
Specificity:Human 4E-BP1 / EIF4EBP1
No cross-reactivity in ELISA with E.coli cell lysate
Application:ELISA, ICC/IF, IF

ELISA: 0.5-1 μg/mL

This antibody can be used at 0.5-1 μg/mL with the appropriate secondary reagents to detect 4EBP1. The detection limit for 4EBP1 is approximately 0.0195 ng/well.

ICC/IF: 10-25 μg/mL

Storage:This antibody can be stored at 2℃-8℃ for one month without detectable loss of activity. Antibody products are stable for twelve months from date of receipt when stored at -20℃ to -80℃. Preservative-Free.
Sodium azide is recommended to avoid contamination (final concentration 0.05%-0.1%). It is toxic to cells and should be disposed of properly. Avoid repeated freeze-thaw cycles.
Human 4E-BP1/EIF4EBP1 Antibody IF Application Image
[Click to enlarge image]
Immunofluorescence staining of Human 4EBP1 in Hela cells. Cells were fixed with 4% PFA, permeabilzed with 0.3% Triton X-100 in PBS, blocked with 10% serum, and incubated with Mouse anti-Human 4EBP1 monoclonal antibody (15 µg/ml) at 37℃ 1 hour. Then cells were stained with the Alexa Fluor® 488-conjugated Goat Anti-mouse IgG secondary antibody (green) and counterstained with DAPI (blue). Positive staining was localized to nucleus and cytoplasm.
4E-BP1 / EIF4EBP1 Antibody, Mouse MAb, Immunofluorescence
Other 4E-BP1/EIF4EBP1 Antibody Products
4E-BP1/EIF4EBP1 Background

The translational suppressor eIF4E binding protein-1, 4E-BP1 functions as a key regulator in cellular growth, differentiation, apoptosis and survival. The Eif4ebp1 gene, encoding 4E-BP1, is a direct target of a transcription factor activating transcription factor-4 (ATF4), a master regulator of gene expression in stress responses. 4E-BP1 is characterized by its capacity to bind specifically to eIF4E and inhibit its interaction with eIF4G. Phosphorylation of 4E-BP1 regulates eIF4E availability, and therefore, cap-dependent translation, in cell stress. Binding of eIF4E to eIF4G is inhibited in a competitive manner by 4E-BP1. Phosphorylation of 4E-BP1 decreases the affinity of this protein for eIF4E, thus favouring the binding of eIF4G and enhancing translation. 4E-BP1 is important for beta-cell survival under endoplasmic reticulum (ER) stress. 4E-BP1 mediates the regulation of protein translation by hormones, growth factors and other stimuli that signal through the MAP kinase and mTORC1 pathways. Recently, 4E-BP1 was found to be a key factor, which converges several oncogenic signals, phosphorylates the molecules, and drives the downstream proliferative signals. Recent studies showed that high expression of phosphorylated 4E-BP-1 (p-4E-BP1) is associated with poor prognosis, tumor progression, or nodal metastasis in different human cancers.

Human 4E-BP1/EIF4EBP1 References
  • Azar R, et al. (2008) Phosphatidylinositol 3-kinase-dependent transcriptional silencing of the translational repressor 4E-BP1. Cell Mol Life Sci. 65(19): 3110-7.
  • Tominaga R, et al. (2010) The JNK pathway modulates expression and phosphorylation of 4E-BP1 in MIN6 pancreatic beta-cells under oxidative stress conditions. Cell Biochem Funct. 28(5): 387-93.
  • Ayuso MI, et al. (2010) New hierarchical phosphorylation pathway of the translational repressor eIF4E-binding protein 1 (4E-BP1) in ischemia-reperfusion stress. J Biol Chem. 285(45): 34355-63.
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