Phospho-Tuberin/TSC2 (Ser1254) Antibody #3616
Filter:
- WB
Western blot analysis of extracts from CAD and PC12 cells, using Phospho-Tuberin/TSC2 (Ser1254) Antibody. The phospho-specificity of the antibody was verified by treating the membrane with (+) or without (-) calf intestinal phosphatase (CIP) after Western transfer.
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Inquiry Info. # 3616
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Supporting Data
| REACTIVITY | H M R |
| SENSITIVITY | Endogenous |
| MW (kDa) | 200 |
| SOURCE | Rabbit |
Application Key:
- WB-Western Blotting
Species Cross-Reactivity Key:
- H-Human
- M-Mouse
- R-Rat
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 (Ser1254) Antibody detects endogenous levels of tuberin only when phosphorylated at serine 1254. This antibody does not detect tuberin phosphorylated at other sites.
Species Reactivity:
Human, Mouse, Rat
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser1254 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).
p38-activated kinase MK2 (MAPKAPK-2) phosphorylates Ser1254 of tuberin, and thus augments the interaction between tuberin and 14-3-3 (8).
p38-activated kinase MK2 (MAPKAPK-2) phosphorylates Ser1254 of tuberin, and thus augments the interaction between tuberin and 14-3-3 (8).
- 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.
- Li, Y. et al. (2003) J. Biol. Chem. 278, 13663-13671.
Pathways
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