Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
Storage bufferPreservative: 0.02% Sodium azide
Our Abpromise guarantee covers the use of ab1126 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/1000. Detects a band of approximately 28 kDa (predicted molecular weight: 25 kDa).|
|IHC-P||1/1000. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
|ICC/IF||Use at an assay dependent concentration. See Abreview.|
FunctionIts translation stimulation activity is repressed by binding to the complex CYFIP1-FMR1 (By similarity). Recognizes and binds the 7-methylguanosine-containing mRNA cap during an early step in the initiation of protein synthesis and facilitates ribosome binding by inducing the unwinding of the mRNAs secondary structures. Component of the CYFIP1-EIF4E-FMR1 complex which binds to the mRNA cap and mediates translational repression. In the CYFIP1-EIF4E-FMR1 complex this subunit mediates the binding to the mRNA cap.
Sequence similaritiesBelongs to the eukaryotic initiation factor 4E family.
modificationsPhosphorylation increases the ability of the protein to bind to mRNA caps and to form the eIF4F complex.
- Information by UniProt
- AUTS19 antibody
- CBP antibody
- eIF 4E antibody
Anti-eIF4E antibody (ab1126) + 30ug bovine kidney extract
Predicted band size: 25 kDa
Observed band size: 28 kDa why is the actual band size different from the predicted?
Western blot of 30
µg bovine kidney extract with anti-eIF-4E (GLO153). The arrow denotes the position corresponding to eIF-4E (~ 28 kDa).
ab1126 at 1/100 staining human epithelial cells by ICC/IF. The cells were paraformaldehyde fixed and blocked with BSA prior to incubation with the antibody for 1 hour. An Alexa-Fluor ® 647 conjugated goat anti-rabbit IgG was used as the secondary.
IHC image of ab1126 staining in human breast carcinoma formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab1126, 1/1000 dilution, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.
For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.
This product has been referenced in:
- Schunter AJ et al. Phosphoproteomics of colon cancer metastasis: comparative mass spectrometric analysis of the isogenic primary and metastatic cell lines SW480 and SW620. Anal Bioanal Chem 409:1749-1763 (2017). Read more (PubMed: 27987026) »
- Gujrati M et al. Targeted Dual pH-Sensitive Lipid ECO/siRNA Self-Assembly Nanoparticles Facilitate In Vivo Cytosolic sieIF4E Delivery and Overcome Paclitaxel Resistance in Breast Cancer Therapy. Adv Healthc Mater 5:2882-2895 (2016). Read more (PubMed: 27723260) »