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Key Specifications Table
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H, M | WB, PIA, IP | Rb | Affinity Purified | Polyclonal Antibody |
| Description | |
|---|---|
| Catalogue Number | 07-224 |
| Brand Family | Upstate |
| Trade Name |
|
| Description | Anti-phospho-STAT2 (Tyr689) Antibody |
| Background Information | Signal transducer and activator of transcription 2 (UniProt: Q9WVL2; also known as STAT2) is encoded by the Stat2 gene (Gene ID: 20847) in murine species. The JAK-STAT signaling pathway play an important role in cell proliferation, cell differentiation, cell migration, and cell death. It is the principal signaling mechanism for a variety of cytokines and growth factors. In mammals, seven different STATs have been recognized. They contain a conserved tyrosine residue near the C-terminus, which is phosphorylated by JAKs, which allows the dimerization of STATs by interacting with a conserved SH2 domain. In their latent form STATs are located in the cytoplasm and upon phosphorylation they are transported into the nucleus by an importin -5 dependent mechanism. In the nucleus, dimerized STATs bind to specific regulatory sequences to activate or repress transcription of target genes. The main function of STAT2 is to mediate IFN- /β signaling. Following type I interferon binding to cell surface receptors, JAK kinases are activated, leading to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize, associate with IRF9/ISGF3G to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of interferon stimulated genes. STAT2 is also reported to serve as a regulator of mitochondrial fission by modulating the phosphorylation of DNM1L at serine 616 and serine 637, which activate and inactivate the GTPase activity of DNM1L respectively. (Ref.: Lee, CJ., et al. (2020). Exp. Mol. Med. 52(9); 1526-1536; Sahani, R., et al. (2015). Brain. 138(10); 2834-2846; Bluyssen, HA., and Levy, DE. (1997). 272(7); 4600-4605). |
| Product Information | |
|---|---|
| Format | Affinity Purified |
| Control |
|
| Presentation | Purified rabbit polyclonal antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide. |
| Quality Level | MQ100 |
| Applications | |
|---|---|
| Application | Anti-phospho-STAT2 (Tyr689), Cat. No. 07-224, is a rabbit polyclonal antibody that detects STAT2 phosphorylated on tyrosine 689 and is tested for use in Immunoprecipitation, Peptide Inhibition, and Western Blotting. |
| Key Applications |
|
| Application Notes | Tested Applications Immunoprecipitation Analysis: 10 µg from a representative lot immunoprecipitated phospho-STAT2 (Tyr689) in lysate from HeLa cells stimulated with Interferon and Interferon Peptide Inhibition Assay: Target band detection in lysate from HeLa cells stimulated with Interferon and Interferon was prevented by pre-blocking of a representative lot with the immunogen phosphopeptide, but not the corresponding non-phosphopeptide. Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user. |
| Biological Information | |
|---|---|
| Immunogen | KLH-conjugated linear peptide corresponding to 9 amino acids surrounding phosphotyrosine 689 from the C-terminal half of mouse STAT2. |
| Concentration | Please refer to the Certificate of Analysis for the lot-specific concentration. |
| Host | Rabbit |
| Specificity | This rabbit polyclonal antibody detects STAT2 phosphorylated on tyrosine 689. |
| Isotype | IgG |
| Species Reactivity |
|
| Species Reactivity Note | Human. Predicted to react with Mouse based on 100% sequence homology. |
| Antibody Type | Polyclonal Antibody |
| Entrez Gene Number |
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| Entrez Gene Summary | The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. In response to interferon (IFN), this protein forms a complex with STAT1 and IFN regulatory factor family protein p48 (ISGF3G), in which this protein acts as a transactivator, but lacks the ability to bind DNA directly. Transcription adaptor P300/CBP (EP300/CREBBP) has been shown to interact specifically with this protein, which is thought to be involved in the process of blocking IFN-alpha response by adenovirus. |
| Gene Symbol |
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| Modifications |
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| Purification Method | Affinity Purfied |
| UniProt Number |
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| UniProt Summary | FUNCTION: SwissProt: P52630 # Signal transducer and activator of transcription that mediates signaling by type I IFNs (IFN-alpha and IFN-beta). Following type I IFN binding to cell surface receptors, Jak kinases (TYK2 and JAK1) are activated, leading to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize, associate with ISGF3G/IRF-9 to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of interferon stimulated genes, which drive the cell in an antiviral state. SIZE: 851 amino acids; 97916 Da SUBUNIT: Interacts with ISGF3G/IRF-9 in the cytoplasm. Heterodimer with STAT1 upon IFN-alpha/beta induced phosphorylation. Interacts with CRSP2 and CRSP6. Interacts with Simian virus 5 protein V and rabies virus phosphoprotein (By similarity). SUBCELLULAR LOCATION: Cytoplasm. Note=Translocated into the nucleus upon activation by IFN-alpha/beta. PTM: Tyrosine phosphorylated in response to IFN-alpha. SIMILARITY: SwissProt: P52630 ## Belongs to the transcription factor STAT family. & Contains 1 SH2 domain. |
| Molecular Weight | ~110 kDa observed; 105.42 kDa calculated. Uncharacterized bands may be observed in some lysate(s). |
| Product Usage Statements | |
|---|---|
| Quality Assurance | Evaluated by Western Blotting in HeLa cells stimulated with Interferon and . Western Blotting Analysis (WB): A 1:200 dilution of this antibody detected STAT2 phosphorylated on tyrosine 689 in HeLa cells stimulated with Interferon (0.3 ng/mL for 16 h) and Interferon ( 2000 U/mL for 20 min). |
| Usage Statement |
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| Storage and Shipping Information | |
|---|---|
| Storage Conditions | Recommended storage: +2°C to +8°C. |
| Packaging Information | |
|---|---|
| Material Size | 200 µL |