Rabbit Polyclonal antibody to G protein beta subunit like (MTOR associated protein, LST8 homolog (S. cerevisiae))Subunit of both mTORC1 and mTORC2, which regulate cell growth and survival in response to nutrient and hormonal signals. mTORC1 is activated in response to growth factors or amino-acids. Amino-acid-signaling to mTORC1 is mediated by Rag GTPases, which cause amino-acid-induced relocalization of mTOR within the endomembrane system. Growth factor-stimulated mTORC1 activation involves AKT1-mediated phosphorylation of TSC1-TSC2, which leads to the activation of the RHEB GTPase that potently activates the protein kinase activity of mTORC1. 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. Within mTORC1, LST8 interacts directly with FRAP1 and enhances its kinase activity. In nutrient-poor conditions, stabilizes the FRAP1-RPTOR interaction and favors RPTOR-mediated inhibition of FRAP1 activity. mTORC2 is also activated by growth factors, but seems to be nutrient-insensitive. mTORC2 seems to function upstream of Rho GTPases to regulate the actin cytoskeleton, probably by activating one or more Rho-type guanine nucleotide exchange factors. mTORC2 promotes the serum-induced formation of stress-fibers or F-actin. mTORC2 plays a critical role in AKT1 'Ser-473' phosphorylation, which may facilitate the phosphorylation of the activation loop of AKT1 on 'Thr-308' by PDK1 which is a prerequisite for full activation. mTORC2 regulates the phosphorylation of SGK1 at 'Ser-422'. mTORC2 also modulates the phosphorylation of PRKCA on 'Ser-657'.
Immunogen
Recombinant protein encompassing a sequence within the center region of human mLST8 / GBL. The exact sequence is proprietary.
Key Feature
Clonality
Polyclonal
Isotype
IgG
Host Species
Rabbit
Tested Applications
WB
*Optimal dilutions/concentrations should be determined by the researcher.
:
Species Reactivity
Human
Predicted Reactivity
Mouse, Rat, Zebrafish, Xenopus laevis, BovineMouse (97%), Rat (97%), Zebrafish (90%), Xenopus laevis (87%), Bovine (99%)
Concentration
1mg/ml (Please refer to the vial label for the specific concentration)
Purification
Affinity purified
Target Information
Gene Synonyms
GBL antibody GbetaL antibody LST8 antibody MGC111011 antibody POP3 antibody WAT1 antibody MLST8 antibody mammalian lethal with SEC13 protein 8 antibody target of rapamycin complex subunit LST8 antibody TORC subunit LST8 antibody gable antibody p
Molecular Weight(MW)
36 kDa (note) (5)
Cellular Localization
Cytoplasm
Application
Application
Sample (30 ug of whole cell lysate) A: 293T 10% SDS PAGE diluted at 1:1000
Positive Control
293T , A431 , Jurkat , Raji
Application Notes
*Optimal dilutions/concentrations should be determined by the researcher.
:
Additional Information
Form
Liquid
Storage Instructions
Keep as concentrated solution. Aliquot and store at -20ºC or below. Avoid multiple freeze-thaw cycles.
Storage Buffer
1XPBS, 1% BSA, 20% Glycerol (pH7). 0.01% Thimerosal was added as a preservative.