PathScan® Phospho-PDGF Receptor β (Tyr751) Sandwich ELISA Antibody Pair #7826
Important Ordering Details
Custom Ordering Details: Product is assembled to order. Please allow up to three business days for your order to be processed.Supporting Data
| REACTIVITY | H M |
Species Cross-Reactivity Key:
- H-Human
- M-Mouse
Product Information
Storage
Protocol
Product Description
Antibodies in kit are custom formulations specific to kit.
Specificity / Sensitivity
For Antibody Pair specificity and sensitivity, please refer to the corresponding PathScan® Sandwich ELISA Kit. Note: This antibody pair detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.
Species Reactivity:
Human, Mouse
Background
Platelet derived growth factor (PDGF) family proteins exist as several disulphide-bonded, dimeric isoforms (PDGF AA, PDGF AB, PDGF BB, PDGF CC, and PDGF DD) that bind in a specific pattern to two closely related receptor tyrosine kinases, PDGF receptor α (PDGFRα) and PDGF receptor β (PDGFRβ). PDGFRα and PDGFRβ share 75% to 85% sequence homology between their two intracellular kinase domains, while the kinase insert and carboxy-terminal tail regions display a lower level (27% to 28%) of homology (1). PDGFRα homodimers bind all PDGF isoforms except those containing PDGF D. PDGFRβ homodimers bind PDGF BB and DD isoforms, as well as the PDGF AB heterodimer. The heteromeric PDGF receptor α/β binds PDGF B, C, and D homodimers, as well as the PDGF AB heterodimer (2). PDGFRα and PDGFRβ can each form heterodimers with EGFR, which is also activated by PDGF (3). Various cells differ in the total number of receptors present and in the receptor subunit composition, which may account for responsive differences among cell types to PDGF binding (4). Ligand binding induces receptor dimerization and autophosphorylation, followed by binding and activation of cytoplasmic SH2 domain-containing signal transduction molecules, such as GRB2, Src, GAP, PI3 kinase, PLCγ, and NCK. A number of different signaling pathways are initiated by activated PDGF receptors and lead to control of cell growth, actin reorganization, migration, and differentiation (5). Tyr751 in the kinase-insert region of PDGFRβ is the docking site for PI3 kinase (6). Phosphorylated pentapeptides derived from Tyr751 of PDGFRβ (pTyr751-Val-Pro-Met-Leu) inhibit the association of the carboxy-terminal SH2 domain of the p85 subunit of PI3 kinase with PDGFRβ (7). Tyr740 is also required for PDGFRβ-mediated PI3 kinase activation (8).
- Deuel, T.F. et al. (1988) Biofactors 1, 213-217.
- Bergsten, E. et al. (2001) Nat. Cell Biol. 3, 512-516.
- Betsholtz, C. et al. (2001) Bioessays 23, 494-507.
- Coughlin, S.R. et al. (1988) Prog. Clin. Biol. Res. 266, 39-45.
- Ostman, A. and Heldin, C.H. (2001) Adv. Cancer Res. 80, 1-38.
- Panayotou, G. et al. (1992) EMBO J. 11, 4261-4272.
- Ramalingam, K. et al. (1995) Bioorg. Med. Chem. 3, 1263-1272.
- Kashishian, A. et al. (1992) EMBO J. 11, 1373-1382.
Limited Uses
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