Revision 2

#73533

Store at -20C

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Orders:

877-616-CELL (2355)

[email protected]

Support:

877-678-TECH (8324)

3 Trask Lane | Danvers | Massachusetts | 01923 | USA

For Research Use Only. Not for Use in Diagnostic Procedures.

Applications:
W, IHC-Bond, IHC-P, IF-IC, FC-FP

Reactivity:
H M R Mk

Sensitivity:
Endogenous

MW (kDa):
79, 86

Source/Isotype:
Rabbit IgG

UniProt ID:
#P40763

Entrez-Gene Id:
6774

Product Usage Information

This product is the carrier free version of product #9145. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol.

This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN, or CUT&Tag assays. If you require a carrier free formulation for chromatin profiling, please contact us. Optimal dilutions/concentrations should be determined by the end user.

BSA and Azide Free antibodies are quality control tested by size exclusion chromatography (SEC) to determine antibody integrity.

Formulation

Supplied in 1X PBS (10 mM Na2HPO4, 3 mM KCl, 2 mM KH2PO4, and 140 mM NaCl (pH 7.8)). BSA and Azide Free.

For standard formulation of this product see product #9145.

Storage

Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance.

Specificity/Sensitivity

Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb (BSA and Azide Free) detects endogenous levels of Stat3 only when phosphorylated at tyrosine 705. This antibody does not cross-react with phospho-EGFR or the corresponding phospho-tyrosines of other Stat proteins.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr705 of mouse Stat3.

Background

The Stat3 transcription factor is an important signaling molecule for many cytokines and growth factor receptors (1) and is required for murine fetal development (2). Research studies have shown that Stat3 is constitutively activated in a number of human tumors (3,4) and possesses oncogenic potential (5) and anti-apoptotic activities (3). Stat3 is activated by phosphorylation at Tyr705, which induces dimerization, nuclear translocation, and DNA binding (6,7). Transcriptional activation seems to be regulated by phosphorylation at Ser727 through the MAPK or mTOR pathways (8,9). Stat3 isoform expression appears to reflect biological function as the relative expression levels of Stat3α (86 kDa) and Stat3β (79 kDa) depend on cell type, ligand exposure, or cell maturation stage (10). It is notable that Stat3β lacks the serine phosphorylation site within the carboxy-terminal transcriptional activation domain (8).

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Applications Key

W: Western Blotting IHC-Bond: IHC Leica Bond IHC-P: Immunohistochemistry (Paraffin) IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized)

Cross-Reactivity Key

H: Human M: Mouse R: Rat Mk: Monkey

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Alexa Fluor is a registered trademark of Life Technologies Corporation.

All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 2

CST Logo
Western blot analysis of extracts from IFN-alpha treated Jurkat cells and HeLa cells (left), as well as EGF treated A431 cells (right), using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb. Note that the basal phospho-Stat3 in A431 is detected by the antibody. Data were generated using the standard formulation of this product.
Western Blotting Image 1: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Immunohistochemical analysis of paraffin-embedded human prostate adenocarcinoma using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb performed on the Leica® BOND™ Rx. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 1: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Immunohistochemical analysis of paraffin-embedded human neuroendocrine lung carcinoma using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb performed on the Leica® BOND™ Rx. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 2: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 2

CST Logo
Immunohistochemical analysis of paraffin-embedded Apc (min/+) mouse intestine, using Phosho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 1: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Immunnohistochemical analysis of paraffin-embedded human lung carcinoma, showing nuclear localization, using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 2: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Immunohistochemical analysis of paraffin embedded human breast carcinoma, specifically endothelial cells, untreated (left) or lambda phosphatase treated (right), using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 3: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 2

CST Logo
Immunohistochemical analysis of paraffin-embedded HeLa cell pellets, SignalSlide® HeLa -/+ IFNa IHC Controls #55861, untreated (left) or treated with Human Interferon-α1 (hIFN-α1) #8927 (right), using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 4: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Confocal immunofluorescent analysis of HeLa cells, IFN-alpha treated (left) or untreated (right), labeled with Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb (green). Data were generated using the standard formulation of this product.
Immunofluorescence Image 1: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Flow cytometric analysis of U266 cells, untreated (blue) or treated with IFN-alpha (50 ng/mL, 15 min; green), using Phospho-Stat3 (Tyr705) (D3A7) XP® Rabbit mAb (solid lines) or concentration matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody. Data were generated using the standard formulation of this product.
Flow Cytometry Image 1: Phospho-Stat3 (Tyr705) (D3A7) XP<sup>®</sup> Rabbit mAb (BSA and Azide Free)
Orders: 877-616-CELL (2355) [email protected] Support: 877-678-TECH (8324) [email protected] Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.