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A431 cells were either left untreated (left lane) or treated (right lane) with 100 ng/ml EGF for 5 minutes at 37°C. The top panel was probed with Stat1 (Cat. No. 610115) and the bottom was probed with Stat1 (pY701) (Cat. No. 612232).
A431 cells were serum starved and treated with EGF (100 ng/ml) for 5 minutes, then fixed in 3.75% paraformaldehyde with 0.2% Triton X-100. Immunofluorescent staining was performed with Stat1 (Cat. No. 610115) and Stat1 (pY701) (Cat. No. 612232).
BD Transduction Laboratories™ Purified Mouse Anti-Stat1 (pY701)
BD Transduction Laboratories™ Purified Mouse Anti-Stat1 (pY701)
Regulatory Status Legend
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
Preparation And Storage
Product Notices
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- Source of all serum proteins is from USDA inspected abattoirs located in the United States.
Stat (Signal transducer and activators of transcription) proteins mediate the biological activity of cytokines, including interleukins, interferons, erythropoietin, and growth factors. Ligand-receptor interaction activates constitutively-associated JAK family kinases as well as subsequent recruitment and activation of Stat proteins by tyrosine phosphorylation. Active Stat proteins then move to the nucleus to promote transcription of cytokine-inducible genes. Seven Stat proteins have been cloned, each of which is differentially expressed and/or activated in a cytokine-specific and cell type-specific manner. Stat1 and Stat2 are components of the ISGF3 (Interferon-Stimulated Gene Factor 3) complex, the primary transcription activator induced by interferon binding to a specific cell-surface receptor. Stat1 has two alternatively spliced isoforms, 91-kDa Stat1α and 84-kDa Stat1β; Stat1α has 38 additional C-terminal amino acids. In response to the binding of IFNα, IFNγ, EGF, PDGF, or CSF-1 to their respective receptors, the Stat1 subunits become tyrosine-phosphorylated at Y701, and the complex translocates to the nucleus. This forms an active complex that includes the DNA-binding p48 subunit, and is responsible for modulating interferon-stimulated genes (ISGs) transciption.
The 4a monoclonal antibody recognizes the phosphorylated Y701 in Stat1α and Stat1β.
Development References (2)
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Darnell JE Jr. STATs and gene regulation. Science. 1997; 277(5332):1630-1635. (Biology). View Reference
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Fu XY, Zhang JJ. Transcription factor p91 interacts with the epidermal growth factor receptor and mediates activation of the c-fos gene promoter. Cell. 1993; 74(6):1135-1145. (Biology). View Reference
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Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described
Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims. Comparisons are not made against non-BD technologies, unless otherwise noted.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.