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Key Specifications Table
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H, M | WB, ICC | M | Purified | Monoclonal Antibody |
| Description | |
|---|---|
| Catalogue Number | 05-1078 |
| Replaces | 04-1014 |
| Description | Anti-STAT3 Antibody, clone 18F7.1 |
| Alternate Names |
|
| Background Information | STAT proteins (Signal Transduction and Activators of Transcription) are latent cytoplasmic transcription factors that have the dual function of signal transduction and activation of transcription. STATs are activated by tyrosine phosphorylation in response to different ligands, after which they translocate to the cell nucleus. The N-terminal region is highly homologous among the STAT proteins and surrounds a completely conserved arginine residue. STATs are a part of the JAK-STAT signaling pathway – a major pathway of the immune system. All cytokines transduce critical signals through this pathway. STAT3 has been shown to be activated by IFN alpha but not IFN beta. The transcription factors associated with STAT3 are c-Jun and cyclic AMP responsive enhancer binding protein (CREB). Deletion of the STAT3 gene in knock out mice was lethal at the early embryonic stage. |
| Product Information | |
|---|---|
| Format | Purified |
| Control |
|
| Presentation | Purified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4, 150 mM NaCl) with 0.05% sodium azide. |
| Quality Level | MQ100 |
| Applications | |
|---|---|
| Application | Use Anti-STAT3 Antibody, clone 18F7.1 (mouse monoclonal antibody) validated in WB, ICC to detect STAT3 also known as Acute-phase response factor, DNA-binding protein APRF, signal transducer & activator of transcription 3. |
| Key Applications |
|
| Application Notes | Immunocytochemistry Analysis: A 1:500 dilution from a representative lot detected STAT3 in HeLa and A431 cells. |
| Biological Information | |
|---|---|
| Immunogen | KLH-conjugated linear peptide corresponding to human STAT3. |
| Epitope | Unknown |
| Clone | 18F7.1 |
| Concentration | Please refer to the Certificate of Analysis for the lot-specific concentration. |
| Host | Mouse |
| Isotype | IgG1κ |
| Species Reactivity |
|
| Antibody Type | Monoclonal Antibody |
| Entrez Gene Number |
|
| Entrez Gene Summary | The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. This protein is activated through phosphorylation in response to various cytokines and growth factors including IFNs, EGF, IL5, IL6, HGF, LIF and BMP2. This protein mediates the expression of a variety of genes in response to cell stimuli, and thus plays a key role in many cellular processes such as cell growth and apoptosis. The small GTPase Rac1 has been shown to bind and regulate the activity of this protein. PIAS3 protein is a specific inhibitor of this protein. Three alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq]. |
| Gene Symbol |
|
| Purification Method | Protein G Purified |
| UniProt Number |
|
| UniProt Summary | FUNCTION: Transcription factor that binds to the interleukin-6 (IL-6)-responsive elements identified in the promoters of various acute-phase protein genes. Activated by IL31 through IL31RA. SUBUNIT STRUCTURE: Forms a homodimer or a heterodimer with a related family member (at least STAT1). Interacts with NCOA1, PELP1, SOCS7 and STATIP1. Interacts with HCV core protein. Interacts with IL23R in presence of IL23. Interacts with IL31RA. Interacts with SIPAR. Interacts (via SH2 domain) with NLK By similarity. Interacts with KPNA4 and KPNA5; KPNA4 may be the primary mediator of nuclear import By similarity. Interacts with TMF1. SUBCELLULAR LOCATION: Cytoplasm. Nucleus. Note: Shuttles between the nucleus and the cytoplasm. Constitutive nuclear presence is independent of tyrosine phosphorylation. TISSUE SPECIFICITY: Heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas. PTM: Tyrosine phosphorylated in response to IL-6, IL-11, CNTF, LIF, CSF-1, EGF, PDGF, IFN-alpha and OSM. 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. INVOLVEMENT IN DISEASE: Defects in STAT3 are the cause of hyperimmunoglobulin E recurrent infection syndrome autosomal dominant (AD-HIES) [MIM:147060]; also known as hyper-IgE syndrome or Job syndrome. AD-HIES is a rare disorder of immunity and connective tissue characterized by immunodeficiency, chronic eczema, recurrent Staphylococcal infections, increased serum IgE, eosinophilia, distinctive coarse facial appearance, abnormal dentition, hyperextensibility of the joints, and bone fractures. MISCELLANEOUS: Involved in the gp130-mediated signaling pathway. SEQUENCE SIMILARITIES: Belongs to the transcription factor STAT family. Contains 1 SH2 domain. |
| Molecular Weight | ~88 kDa observed |
| Product Usage Statements | |
|---|---|
| Quality Assurance | Evaluated by Western Blot in HeLa cell lysate. Western Blot Analysis: 0.5 µg/mL of this antibody detected STAT3 in 10 µg of HeLa cell lysate. |
| Usage Statement |
|
| Storage and Shipping Information | |
|---|---|
| Storage Conditions | Stable for 1 year at 2-8°C from date of receipt. |
| Packaging Information | |
|---|---|
| Material Size | 100 µg |