Angiogenesis
Phospho-PDGF Receptor β (Tyr771) (76D6) Rabbit mAb
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| CSTコード |
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希望納入価格 (円) |
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| #3173S | 100 μL | 57,000 | |
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| #3173P | 40 μL for Custom Sampler Kit |  Custom Antibody Sampler Kitの構成品を選択できます。
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PDGFRb抗体製品一覧
3173 の推奨プロトコール
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3173:
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Western Blotting
| 用途(希釈倍率) | |
| ウエスタンブロッティング(1:1,000) |
| 特異性・感度 | |
| 内在性レベルのTyr771 がリン酸化されたPDGF Receptor β タンパク質を検出します。他の活性化したPDGFR ファミリータンパク質とは交差しません。 |
| 使用抗原 | |
| ヒトのPDGF Receptor β タンパク質のTyr771 周辺領域(合成ペプチド) |
Western Blotting

Western blot analysis of extracts from NIH/3T3 cells untreated or treated with PDGF-BB, using Phospho-PDGF Receptor beta (Tyr771) (76D6) Rabbit mAb (upper) or PDGF Receptor beta (28E1) Rabbit mAb #3169.
The proteins of the platelet derived growth factor (PDGF) family 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).
Phosphorylation of tyrosine 771 in the PDGF β receptor provides the binding site for GTPase activating protein of Ras (RasGAP). It was demonstrated that SHP-2 plays an important role in modulating phosphorylation of tyrosine 771, thereby controlling RasGAP recruitment and Ras/MAP kinase signaling mediated by PDGF receptors (8).
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Betsholtz, C. et al. (2001) Bioessays 23, 494-507.
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Ostman, A. and Heldin, C.H. (2001) Adv. Cancer Res. 80, 1-38.
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Panayotou, G. et al. (1992) EMBO J. 11, 4261-4272.
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Kashishian, A. et al. (1992) EMBO J. 11, 1373-1382.
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