Validated using a knockout cell line
Recombinant
RabMAb

Recombinant Anti-STAT1 antibody [EPR4407] - BSA and Azide free (ab239968)

Overview

  • Product name

    Anti-STAT1 antibody [EPR4407] - BSA and Azide free
    See all STAT1 primary antibodies
  • Description

    Rabbit monoclonal [EPR4407] to STAT1 - BSA and Azide free
  • Host species

    Rabbit
  • Tested applications

    Suitable for: IP, ICC, ICC/IF, IHC-P, WB, Flow Cytmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human STAT1 (N terminal). The exact sequence is proprietary. A/California/7/2009 (H1N1) The immunogen used for this product shares 100% homology with STAT1 beta. Cross-reactivity with this protein has not been confirmed experimentally.

  • General notes

    ab239968 is the carrier-free version of ab109320 This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.

     

    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    Ab239968 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    Mouse: We have preliminary internal testing data to indicate this antibody may not react with this species. Please contact us for more information.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.

Properties

Applications

Our Abpromise guarantee covers the use of ab239968 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
IP Use at an assay dependent concentration.
ICC Use at an assay dependent concentration.
ICC/IF Use at an assay dependent concentration.
IHC-P Use at an assay dependent concentration. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
WB Use at an assay dependent concentration. Predicted molecular weight: 87 kDa.
Flow Cyt Use at an assay dependent concentration.

ab199376 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

 

Target

  • Function

    Signal 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 disease

    Note=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 similarities

    Belongs to the transcription factor STAT family.
    Contains 1 SH2 domain.
  • Post-translational
    modifications

    Phosphorylated 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.
    ISGylated.
  • Cellular localization

    Cytoplasm. Nucleus. Translocated into the nucleus in response to IFN-gamma-induced tyrosine phosphorylation and dimerization.
  • Information by UniProt
  • Database links

  • Alternative names

    • Signal transducer and activator of transcription 1 91kD antibody
    • CANDF7 antibody
    • DKFZp686B04100 antibody
    • IMD31A antibody
    • IMD31B antibody
    • IMD31C antibody
    • ISGF 3 antibody
    • ISGF-3 antibody
    • OTTHUMP00000163552 antibody
    • OTTHUMP00000165046 antibody
    • OTTHUMP00000165047 antibody
    • OTTHUMP00000205845 antibody
    • Signal transducer and activator of transcription 1 91kDa antibody
    • Signal transducer and activator of transcription 1 antibody
    • Signal transducer and activator of transcription 1, 91kD antibody
    • Signal transducer and activator of transcription 1-alpha/beta antibody
    • STAT 1 antibody
    • Stat1 antibody
    • STAT1_HUMAN antibody
    • STAT91 antibody
    • Transcription factor ISGF 3 components p91 p84 antibody
    • Transcription factor ISGF-3 components p91/p84 antibody
    • Transcription factor ISGF3 components p91/p84 antibody
    • XStat1 antibody
    see all

Images

  • Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized MCF-7(Human breast adenocarcinoma cell line) cell line  labeling STAT1 with ab109320 at 1/500 dilution, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) secondary antibody at 1/1000 dilution (green).

    Confocal image showing nuclear and cytoplasmic staining on MCF7 cells

    The nuclear counterstain is DAPI (blue).

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109320).

  • Overlay histogram showing HeLa cells stained with ab109320 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab109320, 1/10000 dilution) for 30 min at 22°C. The secondary antibody used was Alexa Fluor® 488 goat anti-rabbit IgG (H&L) (ab150077) at 1/2000 dilution for 30 min at 22°C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (0.1µg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >5,000 events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109320).

  • ab109320 at 1/100 dilution staining STAT1 in Human ovary carcinoma by Immunohistochemistry, Paraffin-embedded tissue.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109320).

References

ab239968 has not yet been referenced specifically in any publications.

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