Rabbit anti-Human STAT3 Polyclonal Antibody | anti-STAT3 antibody

STAT3, Phosphorylated (Ser727) (Signal Transducer and Activator of Transcription 3, Acute-phase Response Factor, APRF, FLJ20882, MGC16063) (Azide free) (HRP)

Cat. Num. AAA6500972

• Gene Names: STAT3; APRF; HIES; ADMIO
• Reactivity: Human
• Applications: Immunohistochemistry, ELISA, Western Blot
• Purity: Purified by Immunoaffinity chromatography.
• Synonyms: STAT3; Polyclonal Antibody; Phosphorylated (Ser727) (Signal Transducer and Activator of Transcription 3; Acute-phase Response Factor; APRF; FLJ20882; MGC16063) (Azide free) (HRP); anti-STAT3 antibody

• Host: Rabbit
• Reactivity: Human
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: Recognizes human STAT3 when phosphorylated at Ser727.
• Purity/Purification: Purified by Immunoaffinity chromatography.
• Form/Format: Supplied as a liquid in PBS, pH 7.2. No preservative added. Labeled with Horseradish Peroxidase (HRP).

• Applicable Applications for anti-STAT3 antibody: Immunohistochemistry (IHC), ELISA (EIA), Western Blot (WB)
• Application Notes: IHC: 1:50-1:100; ELISA: 1:1,000; WB: 1:100-1:500; Applications are based on unconjugated antibody.
• Immunogen: Synthetic phosphopeptide corresponding to amino acid residues surrounding Ser727 of human STAT3 (KLH).
• Conjugate: HRP
• Antigen Modification: Phosphorylated
• Note: Preservative Free
• Preparation and Storage: Store product at 4 degree C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20 degree C. Aliquots are stable at -20 degree C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Note: Sodium azide is a potent inhibitor of peroxidase and should not be added to HRP conjugates. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Immunofluorescence (IF)

(Fluorescent confocal image of SY5Y cells stained with phospho-STAT3-S727 antibody. SY5Y cells were fixed with 4% PFA (20 min), permeabilized with Triton X-100 (0.2%, 30 min). Cells were then incubated with AP3260a phospho-STAT3-S727 primary antibody (1:200, 2 h at room temperature). For secondary antibody, Alexa Fluor 488 conjugated donkey anti-rabbit antibody (green) was used (1:1000, 1h). Nuclei were counterstained with Hoechst 33342 (blue) (10 ug/ml, 5 min). Note the highly specific localization of the phospho-STAT3 immunosignal mainly to the nucleus, supported by Human Protein Atlas Data.)

Western Blot (WB)

(The Phospho-STAT3-S727 Pab is used in western blot to detect Ser727-phosphorylated STAT3 in mouse liver tissue lysates collected before (-) or after (+) stimulation obtained by IL-6 injection in mouse portal vein. Data is kindly provided by Drs. E. Bard-Chapeau and G-S. Feng from the Burnham Institute (La Jolla, CA).)

Western Blot (WB)

(The phospho-STAT3-Ser727 Pab is used in Western blot to detect Ser727-phosphorylated STAT3 in HL-60 tissue lysates collected before (-) or after (+) stimulation obtained by IFN-a.)

Immunohistochemistry (IHC)

(Formalin-fixed and paraffin-embedded human cancer tissue reacted with the primary antibody, which was peroxidase-conjugated to the secondary antibody, followed by AEC staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated. BC = breast carcinoma; HC = hepatocarcinoma.)

Product Categories/Family for anti-STAT3 antibody

Antibodies; Transcription Factors; STAT

References

1. Schick, N., et al., J. Biol. Chem. 279(37):38787-38796 (2004). 2. Wang, H., et al., Lab. Invest. 84(8):941-951 (2004). 3. Kato, T., et al., J. Biol. Chem. 279(30):31076-31080 (2004). 4. Ivanova, A.V., et al., J. Mol. Biol. 340(4):641-653 (2004). 5. Park, J., et al., Biochem. Biophys. Res. Commun. 320(1):279-285 (2004).

NCBI and Uniprot Product Information

• NCBI GI #: 21618340
• NCBI GeneID: 6774
• NCBI Accession #: NP_644805
• NCBI GenBank Nucleotide #: NM_139276.2
• UniProt Accession #: P40763; O14916; Q9BW54; A8K7B8; K7ENL3
• Molecular Weight: Predicted: 85 kDa
• NCBI Official Full Name: signal transducer and activator of transcription 3 isoform 1
• NCBI Official Synonym Full Names: signal transducer and activator of transcription 3 (acute-phase response factor)
• NCBI Official Symbol: STAT3
• NCBI Official Synonym Symbols: APRF; HIES; ADMIO
• NCBI Protein Information: signal transducer and activator of transcription 3; DNA-binding protein APRF; acute-phase response factor
• UniProt Protein Name: Signal transducer and activator of transcription 3
• Protein Family: Signal transducer and activator of transcription
• UniProt Gene Name: STAT3
• UniProt Synonym Gene Names: APRF
• UniProt Entry Name: STAT3_HUMAN

NCBI Description

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, Jul 2008]

Uniprot Description

STAT3: transcription factor of the STAT family. Phosphorylated and activated by receptor-associated kinases downstream of many cytokines and growth-factor receptors. Constitutively active in a number of human tumors. Forms homo- or heterodimers that translocate into the nucleus where they regulate transcription. Two alternatively spliced isoforms have been described.

Protein type: Transcription factor; Nuclear receptor co-regulator; Motility/polarity/chemotaxis; DNA-binding

Chromosomal Location of Human Ortholog: 17q21.31

Cellular Component: nucleoplasm; cytoplasm; mitochondrial inner membrane; plasma membrane; cytosol; nucleus

Molecular Function: protein dimerization activity; protein binding; ligand-dependent nuclear receptor activity; signal transducer activity; DNA binding; sequence-specific DNA binding; protein kinase binding; transcription factor binding; protein phosphatase binding; transcription factor activity; CCR5 chemokine receptor binding; glucocorticoid receptor binding

Biological Process: transcription from RNA polymerase II promoter; nerve growth factor receptor signaling pathway; viral reproduction; somatic stem cell maintenance; positive regulation of transcription, DNA-dependent; radial glial cell differentiation; thermoregulation; negative regulation of transcription from RNA polymerase II promoter; glucose homeostasis; signal transduction; response to estradiol stimulus; negative regulation of cell proliferation; astrocyte differentiation; regulation of transcription, DNA-dependent; protein import into nucleus; acute-phase response; negative regulation of glycolysis; positive regulation of Notch signaling pathway; response to drug; nervous system development; intracellular receptor-mediated signaling pathway; eating behavior; cytokine and chemokine mediated signaling pathway; regulation of multicellular organism growth; JAK-STAT cascade; cellular response to hormone stimulus; regulation of transcription from RNA polymerase II promoter; cell proliferation; response to ethanol; sexual reproduction; positive regulation of transcription from RNA polymerase II promoter; eye photoreceptor cell differentiation; cell motility; phosphorylation

Disease: Hyper-ige Recurrent Infection Syndrome, Autosomal Dominant; Autoimmune Disease, Multisystem, Infantile-onset