Anti-phospho-erbB-2/HER-2 (Tyr1248) Antibody

185 kDa

The ErbB-2 proto-oncogene, also called Neu, EGFR-2 or HER-2, is a member of the transmembrane receptor tyrosine kinase family, which also includes EGF receptor and EGFR-3 (HER-3 or ErbB-3). Although, ErbB-2 does not have any known high-affinity ligands, its kinase activity can be activated without ligand by either overexpression or heteroassociation with other members of the ErbB family. Amplification of the ErbB-2 gene and overexpression of its product has been detected in almost 40% of primary human breast tumors, which correlates with poor prognosis in node positive breast cancer. ErbB-2 overexpression is also observed in ovarian, gastric, salivary and non-small cell lung carcinomas. Because of this, ErbB-2 is one of the major drug targets for breast cancer and other cancer treatments.

Epitope: Tyr1248

Synthetic phosphopeptide, residues 1243-1255, corresponding to a major auto-phosphorylation (Tyr1248) site of human erbB-2/HER-2 (C-AENPEpYLGLDVPV).

Immunohistochemistry:
IHC was performed by an independent laboratory.

Immunocytochemistry:
2 µg/mL of a previous lot showed positive immunostaining for phospho-erbB2/HER-2 in EGF treated A431 cells.

Research Category
Signaling

Research Sub Category
Growth Factors & Receptors

Kinases & Phosphatases

This Anti-phospho-erbB-2/HER-2 (Tyr1248) Antibody is validated for use in IC, WB for the detection of phospho-erbB-2/HER-2 (Tyr1248).

Predicted to cross react with rat based on conservation of immunogenic sequence.

Recognizes and is specific for the activated form of erbB-2/HER-2 oncoprotein, MW ~138 kDa.

Double immunoaffinity purified rabbit polyclonal IgG in buffer containing 0.1M Tris-Glycine, 0.15M NaCl, 0.05% Sodium Azide, pH7.4

ImmunoAffinity Purified

Stable for 1 year at -20ºC from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Control
EGF treated A431 cells

Evaluated by Western Blot on A431+/-EGF lysates.

Western Blotting Analysis:
1:1000 dilution of this antibody detected phospho-erbB2/Her2 on 10 µg of A431+EGF lysates.

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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