• Product nameAnti-AKT1 (phospho S473) antibody
    See all AKT1 primary antibodies
  • Description
    Rabbit polyclonal to AKT1 (phospho S473)
  • SpecificityThe motif corresponding to the major autophosphorylation site of the human AKT1 kinase protein. Ser473 corresponds to QFSYS in human, rat, mouse, chicken and canis of AKT/PKB proteins. Recent lab re-tests showed negative results in mouse and rat and IHC-P. THerefore, these species and application cannot be guarantee. The region of AKT1 surrounding S473 has a high degree of similarity to the corresponding regions in AKT2 and AKT3 and thus may cross react with these proteins if phosphorylated on the corresponding serine residue.
  • Tested applicationsSuitable for: ICC/IF, ELISA, Dot blot, IHC-Fr, WB, IPmore details
    Unsuitable for: IHC-P
  • Species reactivity
    Reacts with: Chicken, Dog, Human
  • Immunogen

    Synthetic peptide within Human AKT1 (C terminal) (phospho S473). The exact sequence is proprietary.


  • Positive control
    • WB: Whole cell lysate from PDGF stimulated 3T3 cells. ICC/IF: Methanol fixed MCF-7 cells.



Our Abpromise guarantee covers the use of ab66138 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
ICC/IF Use a concentration of 1 µg/ml.
ELISA Use a concentration of 0.01 - 0.1 µg/ml.
Dot blot 1/2000.
IHC-Fr 1/100 - 1/200.
WB Use a concentration of 0.1 - 0.2 µg/ml. Predicted molecular weight: 55 kDa.

Blocking is recommended with BSA. Non-fat dry milk and PBS should be avoided.

IP Use a concentration of 2 - 5 µg/ml.
  • Application notesIs unsuitable for IHC-P.
  • Target

    • FunctionPlays a role as a key modulator of the AKT-mTOR signaling pathway controlling the tempo of the process of newborn neurons integration during adult neurogenesis, including correct neuron positioning, dendritic development and synapse formation (By similarity). General protein kinase capable of phosphorylating several known proteins. Phosphorylates TBC1D4. Signals downstream of phosphatidylinositol 3-kinase (PI(3)K) to mediate the effects of various growth factors such as platelet-derived growth factor (PDGF), epidermal growth factor (EGF), insulin and insulin-like growth factor I (IGF-I). Plays a role in glucose transport by mediating insulin-induced translocation of the GLUT4 glucose transporter to the cell surface. Mediates the antiapoptotic effects of IGF-I. Mediates insulin-stimulated protein synthesis by phosphorylating TSC2 at 'Ser-939' and 'Thr-1462', thereby activating mTORC1 signaling and leading to both phosphorylation of 4E-BP1 and in activation of RPS6KB1. Promotes glycogen synthesis by mediating the insulin-induced activation of glycogen synthase. The activated form can suppress FoxO gene transcription and promote cell cycle progression. Essential for the SPATA13-mediated regulation of cell migration and adhesion assembly and disassembly.
    • Tissue specificityExpressed in all human cell types so far analyzed. The Tyr-176 phosphorylated form shows a significant increase in expression in breast cancers during the progressive stages i.e. normal to hyperplasia (ADH), ductal carcinoma in situ (DCIS), invasive ductal carcinoma (IDC) and lymph node metastatic (LNMM) stages.
    • Involvement in diseaseDefects in AKT1 are a cause of susceptibility to breast cancer (BC) [MIM:114480]. A common malignancy originating from breast epithelial tissue. Breast neoplasms can be distinguished by their histologic pattern. Invasive ductal carcinoma is by far the most common type. Breast cancer is etiologically and genetically heterogeneous. Important genetic factors have been indicated by familial occurrence and bilateral involvement. Mutations at more than one locus can be involved in different families or even in the same case.
      Defects in AKT1 are associated with colorectal cancer (CRC) [MIM:114500].
      Defects in AKT1 are associated with susceptibility to ovarian cancer [MIM:604370]; also called susceptibility to familial breast-ovarian cancer type 1 (BROVCA1).
    • Sequence similaritiesBelongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. RAC subfamily.
      Contains 1 AGC-kinase C-terminal domain.
      Contains 1 PH domain.
      Contains 1 protein kinase domain.
    • DomainBinding of the PH domain to the phosphatidylinositol 3-kinase alpha (PI(3)K) results in its targeting to the plasma membrane. The PH domain mediates interaction with TNK2 and Tyr-176 is also essential for this interaction.
      The AGC-kinase C-terminal mediates interaction with THEM4.
    • Post-translational
      Phosphorylation on Thr-308, Ser-473 and Tyr-474 is required for full activity. Activated TNK2 phosphorylates it on Tyr-176 resulting in its binding to the anionic plasma membrane phospholipid PA. This phosphorylated form localizes to the cell membrane, where it is targeted by PDPK1 and PDPK2 for further phosphorylations on Thr-308 and Ser-473 leading to its activation. Ser-473 phosphorylation by mTORC2 favors Thr-308 phosphorylation by PDPK1. Ser-473 phosphorylation is enhanced by interaction with AGAP2 isoform 2 (PIKE-A). Ser-473 phosphorylation is enhanced in focal cortical dysplasias with Taylor-type balloon cells.
      Ubiquitinated; undergoes both 'Lys-48'- and 'Lys-63'-linked polyubiquitination. TRAF6-induced 'Lys-63'-linked AKT1 ubiquitination is critical for phosphorylation and activation. When ubiquitinated, it translocates to the plasma membrane, where it becomes phosphorylated. When fully phosphorylated and translocated into the nucleus, undergoes 'Lys-48'-polyubiquitination catalyzed by TTC3, leading to its degradation by the proteasome.
    • Cellular localizationCytoplasm. Nucleus. Cell membrane. Nucleus after activation by integrin-linked protein kinase 1 (ILK1). Nuclear translocation is enhanced by interaction with TCL1A. Phosphorylation on Tyr-176 by TNK2 results in its localization to the cell membrane where it is targeted for further phosphorylations on Thr-308 and Ser-473 leading to its activation and the activated form translocates to the nucleus.
    • Information by UniProt
    • Database links
    • Alternative names
      • AKT 1 antibody
      • AKT antibody
      • AKT1 antibody
      • AKT1_HUMAN antibody
      • MGC99656 antibody
      • PKB antibody
      • PKB-ALPHA antibody
      • PRKBA antibody
      • Protein Kinase B Alpha antibody
      • Protein kinase B antibody
      • Proto-oncogene c-Akt antibody
      • RAC Alpha antibody
      • RAC antibody
      • RAC-alpha serine/threonine-protein kinase antibody
      • RAC-PK-alpha antibody
      see all

    Anti-AKT1 (phospho S473) antibody images

    • ICC/IF image of ab66138 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 ab66138 at 1µg/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.

    • 1µg peptide blotted onto a nitrocellulose membrane, followed by ab66138 at 1:2000 dilution. A: AKT1 (pS473) peptide B: AKT1 non-phosphopeptide C: non-related phosphopeptide

    References for Anti-AKT1 (phospho S473) antibody (ab66138)

    This product has been referenced in:
    • Falletta S  et al. mTOR inhibitors response and mTOR pathway in pancreatic neuroendocrine tumors. Endocr Relat Cancer 23:883-891 (2016). Read more (PubMed: 27697900) »
    • Yang Z  et al. Phosphorylation and inactivation of PTEN at residues Ser380/Thr382/383 induced by Helicobacter pylori promotes gastric epithelial cell survival through PI3K/Akt pathway. Oncotarget 6:31916-26 (2015). IHC-P ; Human . Read more (PubMed: 26376616) »

    See all 14 Publications for this product

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    Are you interested in testing both ab66138 and ab9735 in squirrel? Do you know if the sequences are available for this species? We typically offer the testing discount if the homology with the i...

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    Application Western blot
    Sample Human Cell lysate - whole cell (LNCaP - Prostate Cancer Cells)
    Gel Running Conditions Reduced Denaturing (8% SDS-PAGE)
    Loading amount 25 µg
    Specification LNCaP - Prostate Cancer Cells
    Blocking step Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 22°C

    Abcam user community

    Verified customer

    Submitted Oct 19 2015

    Application Immunocytochemistry/ Immunofluorescence
    Sample Human Cell (LNCaP - prostate cancer cells)
    Permeabilization Yes - 0.2% Triton X-100
    Specification LNCaP - prostate cancer cells
    Blocking step Serum as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 1% · Temperature: 22°C
    Fixative Formaldehyde

    Dr. Armen Petrosyan

    Verified customer

    Submitted Oct 19 2015

    We do!

    For the pan-Akt antibody we have ab4702, colon tumor slides, and ab139513 which is NIH3T3 cell lysate.

    The for the Akt1 pS473 antibody ab66138 we have human breast cancer tissue slides ab46961, and TNF treated NIH3T3 lysate ab1...

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    This antibody was used for Coating (2-5ug/ml) to catch out the “Biotinylated phosphorylated protein AKT1”, detected by HRP-streptavidin. This antibody is also used for antibody array to detect the phosphorylation proteins. Please let me kno...

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    Abcam guarantees this product to work in the species/application used in this Abreview.
    Application Western blot
    Sample Human Cell lysate - whole cell (glioblastoma cells)
    Loading amount 50 µg
    Specification glioblastoma cells
    Gel Running Conditions Non-reduced Denaturing
    Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 3% · Temperature: RT°C

    Abcam user community

    Verified customer

    Submitted Dec 06 2012

    Abcam guarantees this product to work in the species/application used in this Abreview.
    Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
    Sample Rat Tissue sections (Tongue)
    Specification Tongue
    Fixative Bouin's solution
    Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Tris-EDTA pH: 9
    Permeabilization No
    Blocking step (agent) for 30 minute(s) · Concentration: 0.2% · Temperature: 22°C

    Dr. Tonny Petersen

    Verified customer

    Submitted Dec 05 2012

    Thank you for calling us and for alerting us to the problems you have been experiencing with some of our products. We take product complaints very seriously, and investigate every product that we feel may not be performing correctly.
    As we discusse...

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    Expiration date: 20-01-2013

    I am very pleased to hear you would like to accept our offer and test ab66138 in Flow Cytometry. This code will give you: 1 free [PRIMARY ANTIBODY/PROTEIN] OR VALUE OFF OF ORDER bef...

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    Flow Cytometry is an untested application for this product so the testing discount code can be provided. Could you let us know the species of cells you would be using?

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