Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line untreated (-) or treated (+) with 100 ng/mL Recombinant Human IL-22 (Catalog # 782-IL) for 15 minutes. PVDF membrane was probed with 0.1 µg/mL of Rabbit Anti-Human Phospho-STAT3 (Y705) Monoclonal Antibody (Catalog # MAB46071) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for Phospho-STAT3 (Y705) at approximately 95 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Detection of Phospho-STAT3 (Y705) in IFN alpha-treated Daudi Human Cell Line by Flow Cytometry.

Daudi human Burkitt's lymphoma cell line was unstimulated (open histogram) or treated with 500 U/mL rhIFN-alpha for 20 minutes (filled histogram) and stained with Rabbit anti-Human Phospho-STAT3 (Y705) Molyclonal Antibody (Catalog # MAB46071) followed by APC-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # F0111). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with methanol. View our protocol for Staining Intracellular Molecules.

Detection of Human STAT3 by Simple Western^TM.

Simple Western shows lysates of Daudi human Burkitt's lymphoma cell line untreated (-) or treated (+) with 50 µg/ml Recombinant Human IL-22 (Catalog # 782-IL) for 15 minutes, loaded at 0.2 mg/ml. A specific band was detected for STAT3 at approximately 89 kDa (as indicated) using 2 µg/mL of Rabbit Anti-Human Phospho-STAT3 (Y705) Monoclonal Antibody (Catalog # MAB46071). This experiment was conducted under reducing conditions and using the 12-230kDa separation system.

Applications for Human Phospho-STAT3 (Y705) Antibody

Application

Recommended Usage

Intracellular Staining by Flow Cytometry

0.25 µg/10⁶ cells
Sample: Daudi Human Cell Line treated with IFN alpha

Simple Western

2 µg/mL
Sample: Daudi human Burkitt's lymphoma cell line untreated (-) or treated (+) with 50 µg/ml Recombinant Human IL-22 (Catalog # 782-IL) for 15 minutes

Western Blot

0.1 µg/mL
Sample: HepG2 human hepatocellular carcinoma cell line treated Recombinant Human IL‑22 (Catalog # 782-IL)

Formulation, Preparation, and Storage

Purification

Protein A or G purified from cell culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: STAT3

Human STAT-3/STAT3a (signal transducer and activator of transcription 3; also called APRF) is a 90-95 kDa member of the STAT family of transcription factors. It is 770 amino acids (aa) in length, contains one SH2 domain (aa 580-670), and is found in almost all cell types. STAT3 mediates gp130, LIF-R, OB-R, IL10-R and EGFR signaling. Upon activation, receptors such as gp130 phosphorylate STAT3 at Ser727, which results in transcriptional activation. Phosphorylation at Tyr705 mediates homo- and hetero-dimerization with STAT1 and nuclear translocation, and is an important event in oncogenic transformation. The STAT3b isoform shows a six aa substitution for aa 716-770, thus eliminating the Ser727 site. Human and mouse STAT3a share 99% aa sequence identity.

Long Name

Signal Transducer and Activator of Transcription 3

Alternate Names

Acute-phase response factor, APRFMGC16063, DNA-binding protein APRF, FLJ20882, HIES, signal transducer and activator of transcription 3, signal transducer and activator of transcription 3 (acute-phase responsefactor)

Entrez Gene IDs

6774 (Human); 20848 (Mouse); 25125 (Rat)

Gene Symbol

STAT3

UniProt

P40763

Additional STAT3 Products

Product Documents for Human Phospho-STAT3 (Y705) Antibody

Product Datasheets

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COA

SDS

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Product Specific Notices for Human Phospho-STAT3 (Y705) Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Human Phospho-STAT3 (Y705) Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB46071

Key Product Details

Validated by

Species Reactivity

Validated:

Cited:

Applications

Validated:

Cited:

Label

Antibody Source

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Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Scientific Data Images for Human Phospho-STAT3 (Y705) Antibody

Detection of Human Phospho-STAT3 (Y705) by Western Blot.