| 货号 | 7978C |
| 描述 | The PathScan® Phospho-mTOR (Ser2481) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of mTOR protein phosphorylated at Ser2481. A mTOR Mouse mAb has been coated onto the microwells. After incubation with cell lysates, mTOR (phospho and nonphospho) protein is captured by the coated antibody. Following extensive washing, Phospho-mTOR (Ser2481) Rabbit mAb is added to detect the captured phospho-mTOR protein. Anti-rabbit IgG, HRP-linked Antibody is then used to recognize the bound detection antibody. HRP substrate TMB is added to develop color. The magnitude of the absorbance for this developed color is proportional to the quantity of mTOR phosphorylated at Ser2481. Antibodies in kit are custom formulations specific to kit. |
| 反应种属 | Human/Mouse |
| 应用 | ELISA |
| 目标/特异性 | PathScan® Phospho-mTOR (Ser2481) Sandwich ELISA Kit #7978 detects endogenous levels of human mTOR protein when phosphorylated at Ser2481 as shown in Figure 1. The kit sensitivity is shown in Figure 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species. |
| 供应商 | CST |
| 背景 | 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). |
| 存放说明 | 4C |
| 参考文献 | Sabers, C.J. et al. (1995) J Biol Chem 270, 815-22. Brown, E.J. et al. (1994) Nature 369, 756-8. Sabatini, D.M. et al. (1994) Cell 78, 35-43. Gingras, A.C. et al. (2001) Genes Dev 15, 807-26. Dennis, P.B. et al. (2001) Science 294, 1102-5. Fang, Y. et al. (2001) Science 294, 1942-5. Navé, B.T. et al. (1999) Biochem J 344 Pt 2, 427-31. Peterson, R.T. et al. (2000) J Biol Chem 275, 7416-23. Huang, S. and Houghton, P.J. (2003) Curr Opin Pharmacol 3, 371-7. |
Figure 1. Treatment of HeLa cells with Calyculin A #9902 accumulates phosphorylation of mTOR at Ser2448 or Ser2481, as detected by PathScan® Phospho-mTOR (Ser2448) Sandwich ELISA Kit #7976 or PathScan® Phospho-mTOR (Ser2481) Sandwich ELISA Kit #7978, but does not affect levels of total mTOR protein detected by PathScan® Total mTOR Sandwich ELISA Kit #7974. The absorbance readings at 450 nm are shown in the top figure, while the corresponding western blots using mTOR (7C10) Rabbit mAb #2983, Phospho-mTOR (Ser2448) Antibody #2971 or Phospho-mTOR (Ser2481) Antibody #2974 is shown in the bottom figure. 图1，采用Calyculin A #9902处理Hela 细胞，使得mTOR蛋白在Ser2448和2481位点发生磷酸化，检测用试剂盒为PathScan ® Phospho-mTOR (Ser2448) Sandwich ELISA Kit #7976或 PathScan ® Phospho-mTOR (Ser2481) Sandwich ELISA Kit #7978 。但不影响总mTOR蛋白的水平，检测试剂盒为PathScan ® Total mTOR Sandwich ELISA Kit #7974。在450nm处读取吸光度值（上图），相对应western blot采用抗体为mTOR (7C10) Rabbit mAb 兔单抗#2983 或Phospho-mTOR (Ser2448) Antibody #2971 或Phospho-mTOR (Ser2481) Antibody #2974，见下图。 | |
