• Product nameAnti-STAT3 antibody
    See all STAT3 primary antibodies
  • Description
    Rabbit polyclonal to STAT3
  • Tested applicationsSuitable for: ICC/IF, IHC-P, WB, ELISAmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Rabbit, Horse, Chicken, Guinea pig, Cow, Cat, Dog, Pig
  • Immunogen

    Synthetic peptide designed withn residues: AQWNQLQQLD TRYLEQLHQL YSDSFPMELR QFLAPWIESQ DWAYAASKES, corresponding to N terminal amino acids 2-51 of Human STAT3 (NP_003141)

  • Positive control
    • Fetal liver lysate



Our Abpromise guarantee covers the use of ab83805 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
ICC/IF 1/1000.
IHC-P Use at an assay dependent concentration.
WB Use a concentration of 1 µg/ml. Predicted molecular weight: 88 kDa. Good results were obtained when blocked with 5% non-fat dry milk in 0.05% PBS-T.
ELISA Use at an assay dependent concentration.

Titre using peptide based assay: 1/1562500.


  • FunctionSignal transducer and transcription activator that mediates cellular responses to interleukins, KITLG/SCF, LEP and other growth factors. Once activated, recruits coactivators, such as NCOA1 or MED1, to the promoter region of the target gene (PubMed:17344214). May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4. Binds to the interleukin-6 (IL-6)-responsive elements identified in the promoters of various acute-phase protein genes. Activated by IL31 through IL31RA. Involved in cell cycle regulation by inducing the expression of key genes for the progression from G1 to S phase, such as CCND1 (PubMed:17344214). Mediates the effects of LEP on melanocortin production, body energy homeostasis and lactation (By similarity). May play an apoptotic role by transctivating BIRC5 expression under LEP activation (PubMed:18242580). Cytoplasmic STAT3 represses macroautophagy by inhibiting EIF2AK2/PKR activity.
  • Tissue specificityHeart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas.
  • Involvement in diseaseHyperimmunoglobulin E recurrent infection syndrome, autosomal dominant
    Autoimmune disease, multisystem, infantile-onset
  • Sequence similaritiesBelongs to the transcription factor STAT family.
    Contains 1 SH2 domain.
  • Post-translational
    Tyrosine phosphorylated upon stimulation with EGF. Tyrosine phosphorylated in response to constitutively activated FGFR1, FGFR2, FGFR3 and FGFR4 (By similarity). Activated through tyrosine phosphorylation by BMX. Tyrosine phosphorylated in response to IL6, IL11, LIF, CNTF, KITLG/SCF, CSF1, EGF, PDGF, IFN-alpha, LEP and OSM. Activated KIT promotes phosphorylation on tyrosine residues and subsequent translocation to the nucleus. Phosphorylated on serine upon DNA damage, probably by ATM or ATR. Serine phosphorylation is important for the formation of stable DNA-binding STAT3 homodimers and maximal transcriptional activity. ARL2BP may participate in keeping the phosphorylated state of STAT3 within the nucleus. Upon LPS challenge, phosphorylated within the nucleus by IRAK1. Upon erythropoietin treatment, phosphorylated on Ser-727 by RPS6KA5. Phosphorylation at Tyr-705 by PTK6 or FER leads to an increase of its transcriptional activity. Dephosphorylation on tyrosine residues by PTPN2 negatively regulates IL6/interleukin-6 signaling.
  • Cellular localizationCytoplasm. Nucleus. Shuttles between the nucleus and the cytoplasm. Translocated into the nucleus upon tyrosine phosphorylation and dimerization, in response to signaling by activated FGFR1, FGFR2, FGFR3 or FGFR4. Constitutive nuclear presence is independent of tyrosine phosphorylation. Predominantly present in the cytoplasm without stimuli. Upon leukemia inhibitory factor (LIF) stimulation, accumulates in the nucleus. The complex composed of BART and ARL2 plays an important role in the nuclear translocation and retention of STAT3. Identified in a complex with LYN and PAG1.
  • Information by UniProt
  • Database links
  • Alternative names
    • 1110034C02Rik antibody
    • Acute Phase Response Factor antibody
    • Acute-phase response factor antibody
    • ADMIO antibody
    • APRF antibody
    • AW109958 antibody
    • DNA binding protein APRF antibody
    • FLJ20882 antibody
    • HIES antibody
    • MGC16063 antibody
    • Signal transducer and activator of transcription 3 (acute phase response factor) antibody
    • Signal transducer and activator of transcription 3 antibody
    • STAT 3 antibody
    • Stat3 antibody
    • STAT3_HUMAN antibody
    see all

Anti-STAT3 antibody images

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human uterus tissue labelling STAT3 with ab83805.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human prostate tissue labelling STAT3 with ab83805.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human kidney tissue labelling STAT3 with ab83805.

  • Immunofluorescence --Sample Type: Macrophages. Dilution: 1:1000
  • Anti-STAT3 antibody (ab83805) at 1 µg/ml + Human fetal liver lysate at 10 µg

    HRP conjugated anti-Rabbit IgG at 1/50000 dilution

    Predicted band size : 88 kDa
    Observed band size : 80 kDa (why is the actual band size different from the predicted?)

References for Anti-STAT3 antibody (ab83805)

ab83805 has not yet been referenced specifically in any publications.

Product Wall

Application Western blot
Loading amount 50 µg
Gel Running Conditions Reduced Denaturing (4-15% TRIS-Glycine SDS PAGE)
Sample Mouse Tissue lysate - whole (1) mouse embryonic spinal cord E11, 2) HEK293H)
Specification 1) mouse embryonic spinal cord E11, 2) HEK293H
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

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Submitted Nov 17 2014

Application Immunohistochemistry (Frozen sections)
Blocking step 0.25%TritonX100, 0.2%Gelatin as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 0.2% · Temperature: 25°C
Sample Mouse Tissue sections (mouse embryonic spinal cord E11)
Specification mouse embryonic spinal cord E11
Permeabilization Yes - 0.25%TritonX100
Fixative Paraformaldehyde

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Submitted Aug 07 2014