Overview

  • Product nameAnti-STAT3 antibody [E121-21]
    See all STAT3 primary antibodies
  • Description
    Rabbit monoclonal [E121-21] to STAT3
  • SpecificityThe antibody only detects Stat3 without phosphorylation on Serine 727. It does not detect S727-phosphorylated Stat3.
  • Tested applicationsSuitable for: IHC-Fr, WB, IHC-P, IP, Flow Cyt, ICC/IFmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Horse, Cow
  • Immunogen

    Synthetic peptide corresponding to Human STAT3. A synthetic peptide corresponding to residues surrounding Ser727 of human Stat3.

  • Positive control
    • A431 cell lysate and lung squamous carcinoma. ICC/IF: HeLa cells Flow Cyt: HeLa cells.
  • General notes

    This product is a recombinant rabbit monoclonal antibody.

    Produced using Abcam’s RabMAb® technology. RabMAb® technology is covered by the following U.S. Patents, No. 5,675,063 and/or 7,429,487.

    A trial size is available to purchase for this antibody.

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

Properties

Applications

Our Abpromise guarantee covers the use of ab32500 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
IHC-Fr Use at an assay dependent concentration.
WB 1/1000. Detects a band of approximately 92 kDa (predicted molecular weight: 88 kDa).
IHC-P Use at an assay dependent concentration.
IP 1/20.
Flow Cyt 1/100.
ICC/IF 1/250.

Target

  • 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
    modifications
    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 [E121-21] images

  • ab32500 staining STAT3 in HeLa cells. The cells were fixed with 4% formaldehyde (10min), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1h. The cells were then incubated overnight at +4°C with ab32500 at 1/250 dilution (shown in green) and ab195889, Mouse monoclonal [DM1A] to alpha Tubulin (Alexa Fluor® 594), at 2µg/ml (shown in red). Nuclear DNA was labelled with DAPI (shown in blue).
    Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).

  • Overlay histogram showing HeLa cells stained with ab32500 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween 20 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 (ab32500, 1/100) for 30 min at 22ºC. The secondary antibody used was Alexa Fluor® 488 goat anti-rabbit IgG (H&L) (ab150081) at 1/2000 dilution for 30 min at 22ºC. Isotype control antibody (black line) was rabbit IgG (monoclonal) (ab172730, 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.

  • Anti-STAT3 antibody [E121-21] (ab32500) at 1/1000 dilution + A431 cell lysate

    Predicted band size : 88 kDa
    Observed band size : 92 kDa (why is the actual band size different from the predicted?)
  • Immunohistochemical analysis of paraffin-embedded lung squamous carcinoma using ab32500 at a 1/50 dilution.

References for Anti-STAT3 antibody [E121-21] (ab32500)

This product has been referenced in:
  • Murphy MJ  et al. Leukemia Inhibitory Factor is Necessary for Ovulation in Female Rhesus Macaques. Endocrinology N/A:en20161283 (2016). IHC ; Macaque Monkey . Read more (PubMed: 27571132) »
  • She S  et al. C-reactive protein is a biomarker of AFP-negative HBV-related hepatocellular carcinoma. Int J Oncol 47:543-54 (2015). Read more (PubMed: 26058824) »

See all 6 Publications for this product

Product Wall

Application Immunohistochemistry (Frozen sections)
Sample Mouse Tissue sections (brain)
Specification brain
Fixative Paraformaldehyde
Permeabilization Yes - 0.05% Triton X-100/PBS
Blocking step (agent) for 1 hour(s) and 0 minute(s) · Concentration: 10% · Temperature: RT°C
Username

Abcam user community

Verified customer

Submitted Feb 24 2009

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunocytochemistry/ Immunofluorescence
Sample Human Cell (HEK cells)
Specification HEK cells
Fixative Methanol
Blocking step BSA as blocking agent for 40 minute(s) · Concentration: 5%
Username

Dr. Randal Moldrich

Verified customer

Submitted Jun 19 2006

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunocytochemistry/ Immunofluorescence
Sample Rat Cell (Glia cell culture)
Specification Glia cell culture
Fixative Paraformaldehyde
Blocking step BSA as blocking agent for 40 minute(s) · Concentration: 5%
Username

Dr. Randal Moldrich

Verified customer

Submitted Jun 19 2006

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"