Rabbit Anti-STAT1 (phospho S727) Recombinant Antibody (VS3-CJ945)

CAT#: VS3-CJ945

This product is a rabbit antibody that recognizes human, mouse, and rat phospho-STAT1 (S727).

Gene Expression
Figure 1 IHC staining of human lymph node Figure 2 Kidney Figure 3 Testis Figure 4 Lymph node Figure 5 RNA cell line category: Cell line enhanced (BJ hTERT+ SV40 Large T+, BJ hTERT+ SV40 Large T+ RasG12V)

Specifications

  • Immunogen
  • Synthetic peptide conjugated to Keyhole Limpet Haemocyanin (KLH)
  • Host Species
  • Rabbit
  • Type
  • Rabbit IgG
  • Specificity
  • Human, Mouse, Rat phospho-STAT1 (S727)
  • Species Reactivity
  • Human, Mouse, Rat
  • Applications
  • WB, IHC
  • Conjugate
  • Unconjugated

Product Property

  • Purification
  • Protein A affinity purified
  • Purity
  • >95% as determined by SDS-PAGE
  • Format
  • Liquid
  • Buffer
  • 40% Glycerol, 1% BSA, TBS, pH7.4.
  • Preservative
  • 0.05% Sodium Azide
  • Storage
  • Store at 4°C for short term. Aliquot and store at -20°C for long term. Avoid repeated freeze/thaw cycles.

Applications

  • Application Notes
  • This antibody has been tested for use in Western Blot, Immunohistochemistry.

Target

  • Alternative Names
  • CANDF7; IMD31A; IMD31B; IMD31C; ISGF-3; STAT91
  • Sequence Similarities
  • Belongs to the transcription factor STAT family.
  • Cellular Localization
  • Cytoplasm, Nucleus
  • Post Translation Modifications
  • Phosphorylated on tyrosine and serine residues in response to a variety of cytokines/growth hormones including IFN-alpha, IFN-gamma, PDGF and EGF (PubMed:28753426, PubMed:26479788).
    Activated KIT promotes phosphorylation on tyrosine residues and subsequent translocation to the nucleus (PubMed:21135090).
    Upon EGF stimulation, phosphorylation on Tyr-701 (lacking in beta form) by JAK1, JAK2 or TYK2 promotes dimerization and subsequent translocation to the nucleus (PubMed:7657660, PubMed:28753426).
    Growth hormone (GH) activates STAT1 signaling only via JAK2 (PubMed:7657660).
    Tyrosine phosphorylated in response to constitutively activated FGFR1, FGFR2, FGFR3 and FGFR4 (PubMed:17561467, PubMed:19088846).
    Phosphorylation on Ser-727 by several kinases including MAPK14, ERK1/2, CAMK2/CAMKII and CK2 in response to IFN-gamma stimulation, is required for maximal transcriptional activity (PubMed:7543024, PubMed:15322115, PubMed:16799645, PubMed:17897103).
    Phosphorylated on Ser-727 by CAMK2/CAMKII in response to IFN-gamma stimulation and calcium mobilization, promoting activity (PubMed:11972023, PubMed:16257975).
    Phosphorylated by CAMK2/CAMKII in response to IFN-beta stimulation and calcium mobilization in epithelial cells, promoting activity (PubMed:35568036).
    Phosphorylation on Ser-727 promotes sumoylation though increasing interaction with PIAS (PubMed:17897103).
    Phosphorylation on Ser-727 by PRKCD induces apoptosis in response to DNA-damaging agents (PubMed:15322115).
    Phosphorylated on tyrosine residues when PTK2/FAK1 is activated; most likely this is catalyzed by a SRC family kinase (PubMed:11278462).
    Dephosphorylation on tyrosine residues by PTPN2 negatively regulates interferon-mediated signaling (PubMed:12138178).
    Upon viral infection or IFN induction, phosphorylation on Ser-708 oCcurs much later than phosphorylation on Tyr-701 and is required for the binding of ISGF3 on the ISREs of a subset of IFN-stimulated genes IKBKE-dependent (PubMed:22065572).
    Phosphorylation at Tyr-701 and Ser-708 are mutually exclusive, phosphorylation at Ser-708 requires previous dephosphorylation of Tyr-701 (PubMed:22065572).
    Sumoylated with 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.
    Mono-ADP-ribosylated at Glu-657 and Glu-705 by PARP14; ADP-ribosylation prevents phosphorylation at Tyr-701 (PubMed:27796300).
    However, the role of ADP-ribosylation in the prevention of phosphorylation has been called into question and the lack of phosphorylation may be due to sumoylation of Lys-703 (PubMed:29858569).
    Monomethylated at Lys-525 by SETD2; monomethylation is necessary for phosphorylation at Tyr-701, translocation into the nucleus and activation of the antiviral defense.
    (Microbial infection) Ubiquitinated by Herpes simplex virus 2 E3 ubiquitin ligase ICP22.
  • Function
  • Signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and other growth factors. Following type I IFN (IFN-alpha and IFN-beta) binding to cell surface receptors, signaling via protein kinases leads to activation of Jak kinases (TYK2 and JAK1) and to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize and 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 IFN- stimulated genes (ISG), 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. Becomes activated in response to KITLG/SCF and KIT signaling. May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4.
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Product Notes

This is a product of Creative Biolabs' Hi-Affi™ recombinant antibody portfolio, which has several benefits including:

• Increased sensitivity
• Confirmed specificity
• High repeatability
• Excellent batch-to-batch consistency
• Sustainable supply
• Animal-free production

See more details about Hi-Affi™ recombinant antibody benefits.

Datasheet

MSDS

COA

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Protocol & Troubleshooting

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Isotype Control

Secondary Antibody

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