Phospho-mTOR (Ser2448) Antibody

• 产品编号：CST-2971L      品牌：CST       原厂货号：2971L
• 产品分类：抗体 > 一抗 > 磷酸化抗体
• 应用分类：

描述：

Phospho-mTOR (Ser2448) Antibody能够检测内源性的Ser2448位点磷酸化的mTOR蛋白。该多克隆抗体是由合成的人源的针对mTOR蛋白Ser2448位点的磷酸化肽段免疫动物而生产的。抗体由protein A和肽亲和层析技术纯化。哺乳动物雷帕霉素（rapamycin）靶蛋白（mTOR，FRAP，RAFT）是一种丝氨酸/苏氨酸蛋白激酶（1-3），其作为ATP和氨基酸的传感器，可以有效调控营养供应及细胞的生长（4,5）。当营养充分时，mTOR响应磷脂酸介导的信号，进而正向调节p70 S6 激酶，并参与失活eIF4E的抑制剂4E-BP1。这些信号导致特定的mRNA亚群的翻译。mTOR可以被Akt信号通路的PI3K激酶磷酸化修饰Ser2448位点，也能自我磷酸化Ser2481位点（7,8）。mTOR的在细胞生长和动态平衡中起着关键作用，在肿瘤中可能存在调控失常。因此，目前很多研究将mTOR作为一个潜在的抗肿瘤治疗靶点（9）。

1. Sabers, C.J. et al. (1995) J Biol Chem 270, 815-22.
2. Brown, E.J. et al. (1994) Nature 369, 756-8.
3. Sabatini, D.M. et al. (1994) Cell 78, 35-43.
4. Gingras, A.C. et al. (2001) Genes Dev 15, 807-26.
5. Dennis, P.B. et al. (2001) Science 294, 1102-5.
6. Fang, Y. et al. (2001) Science 294, 1942-5.
7. Navé, B.T. et al. (1999) Biochem J 344 Pt 2, 427-31.
8. Peterson, R.T. et al. (2000) J Biol Chem 275, 7416-23.
9. Huang, S. and Houghton, P.J. (2003) Curr Opin Pharmacol 3, 371-7.

原厂资料：

Homology

Species predicted to react based on 100% sequence homology: Horse

Specificity / Sensitivity

Phospho-mTOR (Ser2448) Antibody detects endogenous levels of mTOR only when phosphorylated at Ser2448.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser2448 of human mTOR. Antibodies are purified by protein A and peptide affinity chromatography.

Background

The mammalian target of rapamycin (mTOR, FRAP, RAFT) is a Ser/Thr protein kinase (1-3) that functions as an ATP and amino acid sensor to balance nutrient availability and cell growth (4,5). When sufficient nutrients are available, mTOR responds to a phosphatidic acid-mediated signal to transmit a positive signal to p70 S6 kinase and participate in the inactivation of the eIF4E inhibitor, 4E-BP1 (6). These events result in the translation of specific mRNA subpopulations. mTOR is phosphorylated at Ser2448 via the PI3 kinase/Akt signaling pathway and autophosphorylated at Ser2481 (7,8). mTOR plays a key role in cell growth and homeostasis and may be abnormally regulated in tumors. For these reasons, mTOR is currently under investigation as a potential target for anti-cancer therapy (9).

1. Sabers, C.J. et al. (1995) J Biol Chem 270, 815-22.
2. Brown, E.J. et al. (1994) Nature 369, 756-8.
3. Sabatini, D.M. et al. (1994) Cell 78, 35-43.
4. Gingras, A.C. et al. (2001) Genes Dev 15, 807-26.
5. Dennis, P.B. et al. (2001) Science 294, 1102-5.
6. Fang, Y. et al. (2001) Science 294, 1942-5.
7. Navé, B.T. et al. (1999) Biochem J 344 Pt 2, 427-31.
8. Peterson, R.T. et al. (2000) J Biol Chem 275, 7416-23.
9. Huang, S. and Houghton, P.J. (2003) Curr Opin Pharmacol 3, 371-7.

注意事项：

Storage: Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.