• Product nameAnti-mTOR (phospho S2448) antibody
    See all mTOR primary antibodies
  • Description
    Rabbit polyclonal to mTOR (phospho S2448)
  • Tested applicationsSuitable for: IHC-P, WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Sheep, Rabbit, Goat, Horse, Cow, Dog, Pig, Zebrafish, Macaque Monkey, Gorilla, Chinese Hamster
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 2400 - 2500 of Human mTOR, phosphorylated at S2448.

  • Positive control
    • WB: HeLa, Jurkat and A431 (EGF treated) whole cell lysates. IHC-P: Human normal hippocampus tissue. ICC/IF: methanol fixed MCFM cells.



Our Abpromise guarantee covers the use of ab84400 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
IHC-P Use a concentration of 1 µg/ml.
WB Use a concentration of 1 µg/ml. Detects a band of approximately 268 kDa (predicted molecular weight: 288 kDa).
ICC/IF Use a concentration of 5 µg/ml.


  • 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.
  • Post-translational
    Autophosphorylated; 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
  • Database links
  • Alternative names
    • 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
    • FK506 binding protein 12 rapamycin complex associated protein 1 antibody
    • FK506-binding protein 12-rapamycin complex-associated protein 1 antibody
    • FKBP rapamycin associated protein antibody
    • FKBP12 rapamycin complex associated protein antibody
    • FKBP12-rapamycin complex-associated protein 1 antibody
    • FKBP12-rapamycin complex-associated protein antibody
    • FLJ44809 antibody
    • FRAP antibody
    • FRAP1 antibody
    • FRAP2 antibody
    • Mammalian target of rapamycin antibody
    • Mechanistic target of rapamycin antibody
    • mTOR antibody
    • MTOR_HUMAN antibody
    • OTTHUMP00000001983 antibody
    • RAFT1 antibody
    • Rapamycin and FKBP12 target 1 antibody
    • Rapamycin associated protein FRAP2 antibody
    • Rapamycin target protein 1 antibody
    • Rapamycin target protein antibody
    • RAPT1 antibody
    • Serine/threonine-protein kinase mTOR antibody
    see all

Anti-mTOR (phospho S2448) antibody images

  • All lanes : Anti-mTOR (phospho S2448) antibody (ab84400) at 1 µg/ml

    Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
    Lane 2 : EGF-Stimulated A431 Whole Cell Lysate
    Lane 3 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
    Lane 4 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate with Immunizing peptide at 1 µg/ml
    Lane 5 : EGF-Stimulated A431 Whole Cell Lysate with Immunizing peptide at 1 µg/ml
    Lane 6 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate with Immunizing peptide at 1 µg/ml

    Lysates/proteins at 10 µg per lane.

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 288 kDa
    Observed band size : 268 kDa (why is the actual band size different from the predicted?)
    Additional bands at : 117 kDa,41 kDa. We are unsure as to the identity of these extra bands.

    Exposure time : 2 minutes
  • IHC image of mTOR staining in Human hippocampus formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab84400, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

  • ICC/IF image of ab84400 stained MCF-7 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab84400 at 5µg/ml overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti- rabbit (ab96899) IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

References for Anti-mTOR (phospho S2448) antibody (ab84400)

This product has been referenced in:
  • Liu L  et al. Spring viraemia of carp virus induces autophagy for necessary viral replication. Cell Microbiol 17:595-605 (2015). Read more (PubMed: 25376386) »
  • Protzek AO  et al. Augmented ß-Cell Function and Mass in Glucocorticoid-Treated Rodents Are Associated with Increased Islet Ir-ß /AKT/mTOR and Decreased AMPK/ACC and AS160 Signaling. Int J Endocrinol 2014:983453 (2014). Read more (PubMed: 25313308) »

See all 2 Publications for this product

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