Product Pathways - Tyrosine Kinase / Adaptors
Phospho-c-Kit (Tyr703) (D12E12) Rabbit mAb #3073
|3073S||100 µl (10 western blots)||---||In Stock||---|
|3073P||40 µl (4 western blots)||---||In Stock||---|
|3073||carrier free and custom formulation / quantity||email request|
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Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting, IP=Immunoprecipitation
Specificity / Sensitivity
Phospho-c-Kit (Tyr703) (D12E12) Rabbit mAb detects endogenous levels of c-Kit only when phosphorylated at Tyr703. This antibody may cross-reacts with other tyrosine-phosphorylated PTKs.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr703 of human c-Kit.
c-Kit is a member of the subfamily of receptor tyrosine kinases that includes PDGF, CSF-1, and FLT3/flk-2 receptors (1,2). It plays a critical role in activation and growth in a number of cell types including hematopoietic stem cells, mast cells, melanocytes, and germ cells (3). Upon binding with its stem cell factor (SCF) ligand, c-Kit undergoes dimerization/oligomerization and autophosphorylation. Activation of c-Kit results in the recruitment and tyrosine phosphorylation of downstream SH2-containing signaling components including PLCγ, the p85 subunit of PI3 kinase, SHP2, and CrkL (4). Molecular lesions that impair the kinase activity of c-Kit are associated with a variety of developmental disorders (5), and mutations that constitutively activate c-Kit can lead to pathogenesis of mastocytosis and gastrointestinal stromal tumors (6). Tyr719 is located in the kinase insert region of the catalytic domain. c-Kit phosphorylated at Tyr719 binds to the p85 subunit of PI3 kinase in vitro and in vivo (7).
Tyr703 is also located in kinase insert of c-kit. Its phosphorylation provides a docking site for Grb2 binding (8). It was demonstrated that Tyr703 was constitutively phosphorylated in GIST tumor cells (9).
- Martin, F.H. et al. (1990) Cell 63, 203-11.
- Yarden, Y. et al. (1987) EMBO J 6, 3341-51.
- Gommerman, J.L. et al. (1997) J Biol Chem 272, 30519-25.
- Sattler, M. et al. (1997) J Biol Chem 272, 10248-53.
- Nocka, K. et al. (1990) EMBO J 9, 1805-13.
- Hirota, S. et al. (1998) Science 279, 577-80.
- Blume-Jensen, P. et al. (2000) Nat Genet 24, 157-62.
- Thömmes, K. et al. (1999) Biochem J 341 ( Pt 1), 211-6.
- Duensing, A. et al. (2004) Oncogene 23, 3999-4006.
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For Research Use Only. Not For Use In Diagnostic Procedures.
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