|Application ||WB, IHC|
|Calculated MW||149038 Da|
|Other Names||Regulatory-associated protein of mTOR, Raptor, p150 target of rapamycin (TOR)-scaffold protein, RPTOR, KIAA1303, RAPTOR|
|Target/Specificity||A synthetic peptide corresponding to residues near the C-terminus of human Raptor was used as immunogen.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||Raptor Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Involved in the control of the mammalian target of rapamycin complex 1 (mTORC1) activity which regulates cell growth and survival, and autophagy in response to nutrient and hormonal signals; functions as a scaffold for recruiting mTORC1 substrates. mTORC1 is activated in response to growth factors or amino acids. Growth factor-stimulated mTORC1 activation involves a AKT1- mediated phosphorylation of TSC1-TSC2, which leads to the activation of the RHEB GTPase that potently activates the protein kinase activity of mTORC1. Amino acid-signaling to mTORC1 requires its relocalization to the lysosomes mediated by the Ragulator complex and the Rag GTPases. Activated mTORC1 up-regulates protein synthesis by phosphorylating key regulators of mRNA translation and ribosome synthesis. mTORC1 phosphorylates EIF4EBP1 and releases it from inhibiting the elongation initiation factor 4E (eiF4E). mTORC1 phosphorylates and activates S6K1 at 'Thr-389', which then promotes protein synthesis by phosphorylating PDCD4 and targeting it for degradation. Involved in ciliogenesis.|
|Cellular Location||Cytoplasm. Lysosome. Cytoplasmic granule. Note=Targeting to lysosomes depends on amino acid availability. In arsenite-stressed cells, accumulates in stress granules when associated with SPAG5 and association with lysosomes is drastically decreased|
|Tissue Location||Highly expressed in skeletal muscle, and in a lesser extent in brain, lung, small intestine, kidney and placenta. Isoform 3 is widely expressed, with highest levels in nasal mucosa and pituitary and lowest in spleen|
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Provided below are standard protocols that you may find useful for product applications.
Raptor (regulatory associated protein of TOR) is a conserved 150 kDa adaptor protein composed of a unique conserved region, three HEAT repeats and seven WD-40 repeats (1). Raptor recruits mTOR substrates S6K1 (p70 S6 kinase) and 4E-BP1, and regulates mTOR kinase activity (2-3). Even though Raptor is a positive regulator of mTOR, it has been shown that under nutrient deprivation, the Raptor-mTOR association is stabilized in a manner that inhibits mTOR kinase activity (1). Raptor association with mTOR is required for efficient S6K1 and 4E0BP1 phosphorylation (4).
1. D.H. Kim, D.D. Sarbassov, S.M. Ali, J.E. King, R.R. Latek, H. Erdjument-Bromage, P. Tempst and D.M. Sabatini. Cell 110 (2002), pp. 163
2. Kim, D. H., Sarbassov, D. D., Ali, S. M., Latek, R. R., Guntur, K. V., Erdjument-Bromage, H., Tempst, P., and Sabatini, D. M. (2003) Mol. Cell 11, 895-904
3. Hara, K., Maruki, Y., Long, X., Yoshino, K., Oshiro, N., Hidayat, S., Tokunaga, C., Avruch, J., and Yonezawa, K. (2002) Cell 110, 177-189
4. Beugnet, A., Wang, X., and Proud, C.G. 2003. J. Biol. Chem. 278: 40717-40722.
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