Product nameAnti-STAT1 antibody
See all STAT1 primary antibodies
DescriptionRabbit polyclonal to STAT1
Specificityab31369 detects endogenous levels of STAT1 protein around Tyrosine 701.
Tested applicationsSuitable for: WB, ELISA, IHC-Pmore details
Species reactivityReacts with: Mouse, Rat, Human
Synthetic peptide corresponding to Human STAT1 aa 668-717.
Database link: P42224
- IHC: breast carcinoma WB: COLO205 cells extract
Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: PBS, 50% Glycerol, 0.87% Sodium chloride
Without Mg2+ and Ca2+
Concentration information loading...
PurityImmunogen affinity purified
Corresponding phospho antibody
Our Abpromise guarantee covers the use of ab31369 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Detects a band of approximately 87 kDa (predicted molecular weight: 87 kDa).|
|IHC-P||Use at an assay dependent concentration.|
FunctionSignal transducer and activator of transcription that mediates signaling by interferons (IFNs). Following type I IFN (IFN-alpha and IFN-beta) 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. In response to type II IFN (IFN-gamma), STAT1 is tyrosine- and serine-phosphorylated. It then forms a homodimer termed IFN-gamma-activated factor (GAF), migrates into the nucleus and binds to the IFN gamma activated sequence (GAS) to drive the expression of the target genes, inducing a cellular antiviral state.
Involvement in diseaseNote=STAT1 deficiency results in impaired immune response leading to severe mycobacterial and viral diseases. In the case of complete deficiency, patients can die of viral disease.
Defects in STAT1 are a cause of mendelian susceptibility to mycobacterial disease (MSMD) [MIM:209950]; also known as familial disseminated atypical mycobacterial infection. This rare condition confers predisposition to illness caused by moderately virulent mycobacterial species, such as Bacillus Calmette-Guerin (BCG) vaccine and environmental non-tuberculous mycobacteria, and by the more virulent Mycobacterium tuberculosis. Other microorganisms rarely cause severe clinical disease in individuals with susceptibility to mycobacterial infections, with the exception of Salmonella which infects less than 50% of these individuals. The pathogenic mechanism underlying MSMD is the impairment of interferon-gamma mediated immunity whose severity determines the clinical outcome. Some patients die of overwhelming mycobacterial disease with lepromatous-like lesions in early childhood, whereas others develop, later in life, disseminated but curable infections with tuberculoid granulomas. MSMD is a genetically heterogeneous disease with autosomal recessive, autosomal dominant or X-linked inheritance.
Sequence similaritiesBelongs to the transcription factor STAT family.
Contains 1 SH2 domain.
modificationsPhosphorylated on tyrosine and serine residues in response to IFN-alpha, IFN-gamma, PDGF and EGF. Phosphorylation on Tyr-701 (lacking in beta form) by JAK promotes dimerization and subsequent translocation to the nucleus. Phosphorylation on Ser-727 by several kinases including MAPK14, ERK1/2 and CAMKII on IFN-gamma stimulation, regulates STAT1 transcriptional activity. Phosphorylation on Ser-727 promotes sumoylation though increasing interaction with PIAS. Phosphorylation on Ser-727 by PKCdelta induces apoptosis in response to DNA-damaging agents.
Sumoylated by SUMO1, SUMO2 and SUMO3. Sumoylation is enhanced by IFN-gamma-induced phosphorylation on Ser-727, and by interaction with PIAS proteins. Enhances the transactivation activity.
Cellular localizationCytoplasm. Nucleus. Translocated into the nucleus in response to IFN-gamma-induced tyrosine phosphorylation and dimerization.
- Information by UniProt
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All lanes : Anti-STAT1 antibody (ab31369) at 1/1000 dilution
Lane 1 : COLO205 cells extract
Lane 2 : COLO205 cells extract with synthetic phosphopeptide
Predicted band size: 87 kDa
Observed band size: 87 kDa
Immunohistochemical analysis of paraffin-embedded breast carcinoma. Left: Using STAT1 antibody(ab31369, diluted 1:100); Right: The same antibody preincubated with synthesized peptide.
This product has been referenced in:
- Jiang L et al. The Pros1/Tyro3 axis protects against periodontitis by modulating STAT/SOCS signalling. J Cell Mol Med 23:2769-2781 (2019). Read more (PubMed: 30729671) »
- Ma X et al. Alendronate promotes osteoblast differentiation and bone formation in ovariectomy-induced osteoporosis through interferon-ß/signal transducer and activator of transcription 1 pathway. Exp Ther Med 15:182-190 (2018). Read more (PubMed: 29375681) »