Product nameAnti-mTOR (phospho S2448) antibody
See all mTOR primary antibodies
DescriptionRabbit polyclonal to mTOR (phospho S2448)
Specificityab131538 detects endogenous levels of mTOR only when phosphorylated at serine 2448.
Tested applicationsSuitable for: WB, IHC-P, ICC/IFmore details
Species reactivityReacts with: Human
- MCF cells; 293 cell extract untreated or PMA-treated; Human breast carcinoma tissue
Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 0.88% Sodium chloride, 49% PBS, 50% Glycerol
PBS without Mg2+ and Ca2+
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab131538 was purified by affinity chromatography using epitope-specific phosphopeptide. Non-phosphospecific antibodies were removed by chromatography using non-phosphopeptide.
- Epigenetics and Nuclear Signaling
- DNA / RNA
- DNA Damage & Repair
- DNA Damage Response
- DNA Damage Recognition
Our Abpromise guarantee covers the use of ab131538 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Predicted molecular weight: 289 kDa.|
|IHC-P||1/50 - 1/100.|
|ICC/IF||1/100 - 1/200.|
FunctionKinase subunit of both mTORC1 and mTORC2, which regulates cell growth and survival in response to nutrient and hormonal signals. mTORC1 is activated in response to growth factors or amino-acids. 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. 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-421', which then promotes protein synthesis by phosphorylating PDCD4 and targeting it for degradation. Phosphorylates MAF1 leading to attenuation of its RNA polymerase III-repressive function. 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'.
Tissue specificityExpressed in numerous tissues, with highest levels in testis.
Sequence similaritiesBelongs to the PI3/PI4-kinase family.
Contains 1 FAT domain.
Contains 1 FATC domain.
Contains 7 HEAT repeats.
Contains 1 PI3K/PI4K domain.
modificationsAutophosphorylated; when part of mTORC1 or mTORC2.
Cellular localizationEndoplasmic reticulum membrane. Golgi apparatus membrane. Mitochondrion outer membrane. Lysosome. Cytoplasm. Nucleus > PML body. Shuttles between cytoplasm and nucleus. Accumulates in the nucleus in response to hypoxia (By similarity). Targeting to lysosomes depends on amino acid availability and RRAGA and RRAGB.
- Information by UniProt
- dJ576K7.1 (FK506 binding protein 12 rapamycin associated protein 1) antibody
- FK506 binding protein 12 rapamycin associated protein 1 antibody
- FK506 binding protein 12 rapamycin associated protein 2 antibody
All lanes : Anti-mTOR (phospho S2448) antibody (ab131538) at 1/500 dilution
Lane 1 : 293 cell extract (untreated)
Lane 2 : 293 cell extract (PMA-treated)
Predicted band size: 289 kDa
Immunofluorescence analysis of methanol-fixed MCF cells labelling mTOR (phospho S2448) with ab131538 at 1/100 dilution.
Immunohistochemical analysis of paraffin-embedded Human breast carcinoma tissue labelling mTOR (phospho S2448) with ab131538 at 1/50 dilution. Right panel was preincubated with blocking peptide.
This product has been referenced in:
- Zhao HY et al. Diprophylline inhibits non-small cell lung cancer A549 cell proliferation and migration, and promotes apoptosis, by downregulating PI3K signaling pathway. Oncol Lett 17:857-862 (2019). Read more (PubMed: 30655839) »
- Li N et al. Effects of isoliquiritigenin on ovarian cancer cells. Onco Targets Ther 11:1633-1642 (2018). Read more (PubMed: 29606882) »