• Product name

    Anti-GCN2 antibody [EPR5970(2)]
    See all GCN2 primary antibodies
  • Description

    Rabbit monoclonal [EPR5970(2)] to GCN2
  • Host species

  • Tested applications

    Suitable for: WB, IHC-P, Flow Cyt, ICC/IFmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide corresponding to Human GCN2 (N terminal).

  • Positive control

    • HeLa, 293T, MOLT4, MCF7 and A549 cell lysates; Human kidney and human breast carcinoma tissue.
  • General notes

    Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    We are constantly working hard to ensure we provide our customers with best in class antibodies. As a result of this work we are pleased to now offer this antibody in purified format. We are in the process of updating our datasheets. The purified format is designated 'PUR' on our product labels. If you have any questions regarding this update, please contact our Scientific Support team.

    This product is a recombinant rabbit monoclonal antibody.



Our Abpromise guarantee covers the use of ab134053 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
WB 1/1000 - 1/10000. Detects a band of approximately 220 kDa (predicted molecular weight: 187 kDa).
IHC-P 1/100 - 1/250. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.

See IHC antigen retrieval protocols.

Flow Cyt 1/100.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

For unpurified use at 1/1000 - 1/10000


ICC/IF 1/250 - 1/500.


  • Function

    Can phosphorylate the alpha subunit of EIF2 and may mediate translational control.
  • Tissue specificity

    Widely expressed.
  • Sequence similarities

    Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. GCN2 subfamily.
    Contains 2 protein kinase domains.
    Contains 1 RWD domain.
  • Domain

    Kinase domain 1 is a degenerate kinase domain.
    RWD domain is reported to interact with GCN1L1.
  • Post-translational

    Autophosphorylated on threonine residues.
  • Information by UniProt
  • Database links

  • Alternative names

    • E2AK4_HUMAN antibody
    • Eif2ak4 antibody
    • Eukaryotic Translation Initiation Factor 2 alpha kinase 4 antibody
    • Eukaryotic translation initiation factor 2-alpha kinase 4 antibody
    • GCN2 antibody
    • GCN2 eIF2alpha kinase antibody
    • GCN2 like protein antibody
    • GCN2-like protein antibody
    • KIAA1338 antibody
    • MGCN2 antibody
    see all


  • Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: GCN2 knockout HAP1 cell lysate (20 µg)
    Lane 3: MOLT4 cell lysate (20 µg)
    Lane 4: A549 cell lysate (20 µg)

    Lanes 1 - 4: Merged signal (red and green). Green - ab134053 observed at 171 kDa. Red - loading control, ab18058, observed at 124 kDa.

    Unpurified ab134053 was shown to recognize GCN2 when GCN2 knockout samples were used, along with additional cross-reactive bands. Wild-type and GCN2 knockout samples were subjected to SDS-PAGE. ab134053 and ab18058 (loading control to Vinculin) were diluted at 1/1000 and 1/10 000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10000 dilution for 1 h at room temperature before imaging.

  • Immunocytochemistry/ Immunofluorescence analysis of MCF7 (Human breast adenocarcinoma cell line) cells labeling GCN2  with ab134053 at 1/250 dilution (4.0μg/ml). The cells were co-stained with ab195889, an Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) at 1/200 (2.5 μg/ml). Cells were fixed with 100% methanol. ab150077, a Goat anti-rabbit IgG(Alexa Fluor® 488) secondary antibody was used at 1/1000 dilution. DAPI was used as the nuclear counter stain.

  • All lanes : Anti-GCN2 antibody [EPR5970(2)] (ab134053) at 1/10000 dilution (purified)

    Lane 1 : HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate
    Lane 2 : HEK-293 (Human epithelial cell line from embryonic kidney) whole cell lysate

    Lysates/proteins at 15 µg per lane.

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/100000 dilution

    Predicted band size: 187 kDa
    Observed band size: 187 kDa

    Blocking and diluting buffer: 5% NFDM/TBST.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carconoma tissue sections labeling GCN2 with purified ab134053 at 1/100 dilution (10 μg/ml). Heat mediated antigen retrieval was performed using EDTA Buffer, PH9. ab97051, a Goat Anti-Rabbit IgG H&L (HRP) secondary antibody was used at 1/500 dilution. Tissue was counterstained with hematoxylin. PBS instead of the primary antibody was used as the negative control.

  • Flow Cytometry analysis of MCF7 (Human breast adenocarcinoma cell line) cells labeling GCN2 with purified ab134053 at 1/100 dilution (10 ug/ml). Cells were fixed with 4% paraformaldehyde. A Goat anti-rabbit IgG (Alexa Fluor® 488) secondary antibody was used at 1/2000 dilution. Rabbit monoclonal IgG (Black) was used as the isotypre control. Cells without incubation with the primary antibody and secondary antibody (Blue) is the unlabeled control.

  • Anti-GCN2 antibody [EPR5970(2)] (ab134053) at 1/50000 dilution (purified) + MOLT-4 (Human lymphoblastic leukemia cell line) whole cell lysate at 20 µg

    Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/20000 dilution

    Predicted band size: 187 kDa
    Observed band size: 187 kDa

    Blocking and diluting buffer: 5% NFDM /TBST.

  • Immunofluorescence staining of MCF-7 cells with purified ab134053 at a working dilution of 1/500, counter-stained with DAPI. The secondary antibody was an Alexa Fluor® 488 conjugated goat anti-rabbit (ab150077), used at a dilution of 1/1000. The cells were fixed in 100% methanol. The negative control is shown in bottom right hand panel - for the negative control, PBS was used instead of the primary antibody.

  • All lanes : Anti-GCN2 antibody [EPR5970(2)] (ab134053) at 1/1000 dilution (Unpurified)

    Lane 1 : HeLa cell lysate
    Lane 2 : 293T cell lysate
    Lane 3 : MOLT4 cell lysate
    Lane 4 : A549 cell lysate

    Lysates/proteins at 10 µg per lane.

    All lanes : HRP labelled goat anti-rabbit at 1/2000 dilution

    Predicted band size: 187 kDa

  • Immunohistochemical analysis of paraffin-embedded Human kidney tissue labelling GCN2 with unpurified ab134053 at 1/100 dilution.

  • Overlay histogram showing HeLa cells stained with unpurified ab134053 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab134053, 1/10000 dilution) for 30 min at 22°C. The secondary antibody used was Alexa Fluor® 488 goat anti-rabbit IgG (H&L) (ab150077) at 1/2000 dilution for 30 min at 22°C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (0.1μg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >5,000 events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter. This antibody gave a positive signal in HeLa cells fixed with 4% paraformaldehyde (10 min)/permeabilized with 0.1% PBS-Tween for 20 min used under the same conditions.


This product has been referenced in:

  • Okada A  et al. D-serine, a novel uremic toxin, induces senescence in human renal tubular cells via GCN2 activation. Sci Rep 7:11168 (2017). Read more (PubMed: 28894140) »
  • Wu H  et al. Arginase-1-dependent promotion of TH17 differentiation and disease progression by MDSCs in systemic lupus erythematosus. Sci Transl Med 8:331ra40 (2016). Read more (PubMed: 27009269) »
See all 4 Publications for this product

Customer reviews and Q&As


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