Phospho-Tuberin/TSC2 (Ser939) Antibody #3615
Filter:
- WB
Supporting Data
| REACTIVITY | H M |
| SENSITIVITY | Endogenous |
| MW (kDa) | 200 |
| SOURCE | Rabbit |
Application Key:
- WB-Western Blotting
Species Cross-Reactivity Key:
- H-Human
- M-Mouse
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
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.
Protocol
Specificity / Sensitivity
Phospho-Tuberin/TSC2 (Ser939) Antibody detects endogenous levels of tuberin only when phosphorylated at serine 939. This antibody does not cross-react with tuberin phosphorylated at other sites.
Species Reactivity:
Human, Mouse
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues around Ser939 of human tuberin. Antibodies are purified by protein A and peptide affinity chromatography.
Background
Tuberin is a product of the TSC2 tumor suppressor gene and an important regulator of cell proliferation and tumor development (1). Mutations in either TSC2 or the related TSC1 (hamartin) gene cause tuberous sclerosis complex (TSC), an autosomal dominant disorder characterized by development of multiple, widespread non-malignant tumors (2). Tuberin is directly phosphorylated at Thr1462 by Akt/PKB (3). Phosphorylation at Thr1462 and Tyr1571 regulates tuberin-hamartin complexes and tuberin activity (3-5). In addition, tuberin inhibits the mammalian target of rapamycin (mTOR), which promotes inhibition of p70 S6 kinase, activation of eukaryotic initiation factor 4E binding protein 1 (4E-BP1, an inhibitor of translation initiation), and eventual inhibition of translation (3,6,7).
Tuberin is phosphorylated on Ser939 and Thr1462 in response to PI3K activation and that the human TSC complex is a direct biochemical target of the PI3K/Akt pathway (3). This data complements Drosophila genetics studies suggesting the possible involvement of the tuberin-hamartin complex in the PI3K/Akt mediated insulin pathway (8-10).
Tuberin is phosphorylated on Ser939 and Thr1462 in response to PI3K activation and that the human TSC complex is a direct biochemical target of the PI3K/Akt pathway (3). This data complements Drosophila genetics studies suggesting the possible involvement of the tuberin-hamartin complex in the PI3K/Akt mediated insulin pathway (8-10).
- Soucek, T. et al. (1998) Proc Natl Acad Sci U S A 95, 15653-8.
- Sparagana, S.P. and Roach, E.S. (2000) Curr Opin Neurol 13, 115-9.
- Manning, B.D. et al. (2002) Mol Cell 10, 151-62.
- Aicher, L.D. et al. (2001) J Biol Chem 276, 21017-21.
- Dan, H.C. et al. (2002) J Biol Chem 277, 35364-70.
- Goncharova, E.A. et al. (2002) J Biol Chem 277, 30958-67.
- Inoki, K. et al. (2002) Nat Cell Biol 4, 648-57.
- Gao, X. and Pan, D. (2001) Genes Dev 15, 1383-92.
- Potter, C.J. et al. (2001) Cell 105, 357-68.
- Tapon, N. et al. (2001) Cell 105, 345-55.
限制使用
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For Research Use Only. Not For Use In Diagnostic Procedures.
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