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Phospho-TrkA (Tyr490)/TrkB (Tyr516) (C35G9) Rabbit mAb
synthetic phosphopeptide corresponding to residues surrounding Tyr490 of human TrkA
W, IP
大量
详见MSDS文件
CST
R,H,M
详见说明书
1
-20°c
40 ul (4 western blots)/100 ul (10 western blots)/carrier free & custom formulation / quantity
规格: | 产品价格: | ¥请询价 | |
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规格: | 40 ul (4 western blots) | 产品价格: | ¥请询价 |
规格: | 100 ul (10 western blots) | 产品价格: | ¥请询价 |
规格: | carrier free & custom formulation / quantity | 产品价格: | ¥请询价 |
pathway more info application references datasheet PDF MSDS PDF protocols
Applications Key: W=Western Blotting IP=Immunoprecipitation
Reactivity Key: H=Human M=Mouse R=Rat
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Applications | Reactivity | Sensitivity | MW (kDa) | Isotype |
---|---|---|---|---|
W IP | R (H) (M) | Endogenous | 140 | Rabbit IgG |
Protocols | |
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Specificity / Sensitivity | Phospho-TrkA (Tyr490)/TrkB (Tyr516) (C35G9) Rabbit mAb detects endogenous levels of TrkA and TrkB only when phosphorylated at Tyr490 and Tyr516, respectively. This antibody may cross-react with Bcr-Abl phosphorylated at an unkown tyrosine residue. |
Source / Purification | Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr490 of human TrkA. |
Background | The family of Trk receptor tyrosine kinases consists of TrkA, TrkB and TrkC. While the sequence of these family members is highly conserved, they are activated by different neurotrophins: TrkA by NGF, TrkB by BDNF or NT4, and TrkC by NT3. TrkA regulates proliferation and is important for development and maturation of the nervous system (1). Phosphorylation at Tyr490 is required for Shc association and activation of the Ras-MAP kinase cascade. Residues Tyr674/675 lie within the catalytic domain, and phosphorylation at this site reflects TrkA kinase activity (2-6). Point mutations, deletions and chromosomal rearrangements (chimeras) cause ligand-independent receptor dimerization and activation of TrkA. Many malignancies including breast, colon, prostate and thyroid carcinomas and acute myeloid leukemia have activated TrkA. Expression of TrkA in neuroblastomas is a good prognostic marker because it signals growth arrest and differentiation of cells originating from the neural crest (1). The phosphorylation sites are conserved between TrkA and TrkB: Tyr490 of TrkA corresponds to Tyr512 in TrkB, and Tyr674/675 of TrkA to Tyr706/707 in TrkB of the human sequence (7). TrkB is overexpressed in tumors such as neuroblastoma, prostate adenocarcinoma and pancreatic ductal adenocarcinoma. In neuroblastomas overexpression of TrkB correlates with unfavorable disease outcome when autocrine loops signaling tumor survival are potentiated by additional overexpression of brain-derived neurotrophic factor (BDNF). An alternatively spliced truncated TrkB isoform lacking the kinase domain is overexpressed in Wilms’s tumors and this isoform may act as a dominant-negative to TrkB signaling (8).
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Application References | Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know! |
Companion Products |
For Research Use Only. Not For Use In Diagnostic Procedures. |
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