• Product name
  • Detection method
  • Precision
    Sample n Mean SD CV%
    HeLa extract 6 5.3%
    Sample n Mean SD CV%
    HeLa extract 3 6.5%
  • Sample type
    Cell Lysate, Tissue Homogenate
  • Assay type
  • Sensitivity
    5 ng/ml
  • Range
    7 ng/ml - 700 ng/ml
  • Assay time
    1h 30m
  • Assay duration
    One step assay
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat
  • Product overview

    GAPDH in vitro SimpleStep ELISA™ (Enzyme-Linked Immunosorbent Assay) kit (ab176642) is designed for the semi-quantitative measurement of GAPDH protein in human and mouse cells.

    The SimpleStep ELISA™ employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. TMB substrate is added and during incubation is catalyzed by HRP, generating blue coloration. This reaction is then stopped by addition of Stop Solution completing any color change from blue to yellow. Signal is generated proportionally to the amount of bound analyte and the intensity is measured at 450 nm. Optionally, instead of the endpoint reading, development of TMB can be recorded kinetically at 600 nm.

  • Tested applications
    Suitable for: Sandwich ELISAmore details
  • Platform


  • Storage instructions
    Store at +4°C. Please refer to protocols.
  • Components 1 x 96 tests
    GAPDH (Total) Capture Antibody 1 x 3ml
    GAPDH (Total) Detector Antibody 1 x 3ml
    10X Wash Buffer PT 1 x 15ml
    50X Cell Extraction Enhancer Solution 1 x 1ml
    5X Cell Extraction Buffer PTR (ab193970) 1 x 10ml
    Lyophilized GAPDH Control Lysate 1 vial
    Plate Seal 1 unit
    SimpleStep Pre-Coated 96-Well Microplate (ab206978) 1 unit
    Stop Solution 1 x 12ml
    TMB Substrate 1 x 12ml
  • Research areas
  • Function
    Has both glyceraldehyde-3-phosphate dehydrogenase and nitrosylase activities, thereby playing a role in glycolysis and nuclear functions, respectively. Participates in nuclear events including transcription, RNA transport, DNA replication and apoptosis. Nuclear functions are probably due to the nitrosylase activity that mediates cysteine S-nitrosylation of nuclear target proteins such as SIRT1, HDAC2 and PRKDC (By similarity). Glyceraldehyde-3-phosphate dehydrogenase is a key enzyme in glycolysis that catalyzes the first step of the pathway by converting D-glyceraldehyde 3-phosphate (G3P) into 3-phospho-D-glyceroyl phosphate.
  • Pathway
    Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 1/5.
  • Sequence similarities
    Belongs to the glyceraldehyde-3-phosphate dehydrogenase family.
  • Post-translational
    S-nitrosylation of Cys-152 leads to interaction with SIAH1, followed by translocation to the nucleus.
  • Cellular localization
    Cytoplasm > cytosol. Nucleus. Cytoplasm > perinuclear region. Membrane. Translocates to the nucleus following S-nitrosylation and interaction with SIAH1, which contains a nuclear localization signal (By similarity). Postnuclear and Perinuclear regions.
  • Information by UniProt
  • Alternative names
    • Aging associated gene 9 protein
    • G3P_HUMAN
    • G3PD
    • GAPD
    • GAPDH
    • Glyceraldehyde 3 phosphate dehydrogenase
    • Glyceraldehyde-3-phosphate dehydrogenase
    • Peptidyl-cysteine S-nitrosylase GAPDH
    see all
  • Database links


Our Abpromise guarantee covers the use of ab176642 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
Sandwich ELISA Use at an assay dependent concentration.


  • ELISA Protocol Summary
  • Example of a typical GAPDH cell lysate dilution series.  Background-subtracted data values (mean +/- SD) are graphed.

  • Example of a typical GAPDH recombinant protein standard curve.  Background-subtracted data values (mean +/- SD) are graphed.

  • Linearity of dilution in representative sample matrices. Cellular lysates were prepared at 3 concentrations in common media containing 1 x Cell Extraction Buffer PTR. Data from duplicate measurements of GAPDH are normalized and plotted.

  • Cell line analysis for GAPDH from 5 µg/mL preparations of cell extracts. Data from triplicate measurements (mean +/- SD) are plotted and compared to 1X Cell Extraction Buffer PTR (zero).



This product has been referenced in:
  • Kempf SJ  et al. Chronic low-dose-rate ionising radiation affects the hippocampal phosphoproteome in the ApoE-/- Alzheimer's mouse model. Oncotarget 7:71817-71832 (2016). ELISA ; Mouse . Read more (PubMed: 27708245) »
  • Kempf SJ  et al. An integrated proteomics approach shows synaptic plasticity changes in an APP/PS1 Alzheimer's mouse model. Oncotarget 7:33627-48 (2016). Read more (PubMed: 27144524) »
See all 2 Publications for this product

Customer reviews and Q&As

GAPDH secretion into cell culture medium

Good Excellent 5/5 (Ease of Use)
I ordered the GAPDH ELISA as I need a housekeeping protein that is present in the medium. GAPDH is reported to be present extracellularly but there did not appear to be any ELISAs on the market that can measure GAPDH in the culture medium. On testing this ELISA we found that GAPDH was present both in our human embryonic stem cell culture medium and in our neuronal differentiated cell culture medium, whereas it was not present in the culture medium alone. The cell culture medium was run undiluted on the ELISA. The only disadvantage that we found with this kit was that the kit does not provide absolute concentrations for GAPDH, this could easily be solved by providing a known mass of GAPDH.

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