【产品介绍】HER2 / ErbB2 is one of the four members of the ErbB receptor family of transmembrane receptor- like tyrosine kinases (1). The kinase activity of ErbB2 can be activated without ligand if it is overexpressed, and by association with other ErbB proteins (2). Overexpression of ErbB2 is detected in almost 40% of human breast cancers (3). ErbB2 is one of the major targets for the treatment of breast cancer and other carcinomas. Autophosphorylation did not modulate receptor turnover. A Tyr----Phe substitution of ErbB-2 Tyr-877 homologous to pp60c-src Tyr-416 did not alter ErbB-2 biological and biochemical properties, thus excluding the possibility that phosphorylation of this residue, located in the kinase domain, modulates ErbB-2 gp185 catalytic function (4). HER2 / ErbB2 Phospho (pY877) (ERBB2) Recommended Applications WB, IHC, ICC Applications and Recommended Dilution Factors WB: 1:500 - 1000 IHC: 1:250 - 500 ICC: 1:50 - 100 Species Reactivity Human Products Data Western blot analysis on (A,B) HeLa cell lysates or (C,D) SKBR-3 using anti-Phospho-HER2 (pY877) RabMAb (Cat. #2521-1) Cells were either (A,C) untreated (B,D) treated with EGF HER2 / ErbB2 Phospho (pY877) (ERBB2) Paraffin-embedded human breast ductal infiltrating carcinoma tissue stained with anti-HER2 Phospho (pY877) RabMAb. (Cat# 2521-1) Note positive (3+) membrane staining of tumor cells Immunofluorescent staining of SKBR3 cells using anti-HER2 Phospho (pY877) RabMAb. (Cat# 2521-1). HER2 / ErbB2 Phospho (pY877) (ERBB2) Specificity A phospho - specific peptide corresponding to residues surrounding tyrosine 877 of human HER2 was used as an immunogen. This antibody detects HER2 phosphorylated at tyrosine 877. |