Mitochondrial Aldehyde Dehydrogenase (ALDH2) Activity Assay Kit (ab115348)


  • Product name
    Mitochondrial Aldehyde Dehydrogenase (ALDH2) Activity Assay Kit
    See all Aldehyde Dehydrogenase kits
  • Detection method
  • Precision
    Sample n Mean SD CV%
    1 20 5%
    Sample n Mean SD CV%
    1 4 12%
  • Sample type
    Cell culture extracts, Tissue Extracts
  • Assay type
    Enzyme activity
  • Range
    60 µg/ml - 250 µg/ml
  • Assay duration
    Multiple steps standard assay
  • Species reactivity
    Reacts with: Mouse, Rat, Cow, Dog, Human
  • Product overview

    ab115348 is used to determine mitochondrial aldehyde dehydrogenase activity (ALDH2) in a sample. The enzyme is captured within the wells of the microplate and activity is determined by following the production of NADH in the following ALDH2 catalyzed reaction:

    acetaldehyde + NAD+ -> acid + NADH

    The generation of NADH is coupled to the 1:1 reduction of a reporter dye to yield a colored (yellow) reaction product whose concentration can be monitored by measuring the increase in absorbance at 450 nm (Dye molar extinction coefficient - 37000 M-1cm-1). ab115348 immunocaptures in each well only native ALDH2 from the chosen sample; this removes all other enzymes, including unrelated aldehyde dehydrogenases.

  • Notes

    Reagent dye, Coupler and NAD+ are shipped lyophilized. Before use rehydrate by adding 0.25 mL pure water to each tube and vortex each tube thoroughly to dissolve. After hydration unused amounts of these three materials should be stored at -80°C. Store all other components store at 4°C. This kit is stable for 6 months from receipt.

  • Platform



  • Reference sample graph
  • Reference Sample graph
  • Determination of effect reactive species on ALDH2 activity.
    The mitochondrial location of ALDH2 may increase the exposure of this enzyme to high levels of reactive oxygen and nitrogen species generated in mitochondria. ALDH2 has been shown to be specifically inactivated by nitrative stress, particularly by modification or crosslinking of an active site cysteine. To demonstrate this rat liver homogenate was exposed in vitro to a dilution series of peroxynitirite at concentrations - 0, 25, 50, 100, 200, 400, 800, 1600 µM. After exposure the samples were extracted, diluted to 0.25 mg/mL and loaded into microplate wells in duplicate. After following the assay protocol as described above, the activity of each sample was measured and graphed against peroxynitrite exposure concentration. The ALDH2 activity after exposure was reduced with an IC50approximately 210 µM.



This product has been referenced in:
  • Gu X  et al. Effect of ALDH2 on High Glucose-Induced Cardiac Fibroblast Oxidative Stress, Apoptosis, and Fibrosis. Oxid Med Cell Longev 2017:9257967 (2017). Read more (PubMed: 29129988) »
  • Jin S  et al. ALDH2(E487K) mutation increases protein turnover and promotes murine hepatocarcinogenesis. Proc Natl Acad Sci U S A 112:9088-93 (2015). Functional Studies . Read more (PubMed: 26150517) »

See all 5 Publications for this product

Customer reviews and Q&As

Thank you for contacting us.
I am sorry to hear that you are obtaining low OD readings with the kit.

Could you please let me know the following details:

1) What samples were used?
2) How were they prepared?
3) What OD...

Read More

Thank you for contacting us.

The aldehyde substrate is 25mM final, 1mM b-NAD+ in a buffer at pH9.

These were all optimized concentrations. To look at competitive inhibitors you could decrease the aldehyde conc...

Read More

Thank you for contacting us.

The final pH is 9.0.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

Thank you for contacting us.

This is a species specific phenomenon, most mouse raised monoclonal antibodies have a lower affinity for rodent proteins therefore the activity yield is lower.

I would predict that the antibody in thi...

Read More

Is this kit compatible with monkey tissue?
A: We did not test money sample with this assay. According to UniProtKB, the identity of human ALDH2 and other primate’s are around 98% to 99%. Therefore, this assay most likely will work with monke...

Read More

Thank you for your enquiry and your interest in our products.

You need to plate out the cells parallel for the two assays and perform the assays separately. Once you have used the cells for one assay, unfortunately you can't use the same cell...

Read More

Thank you for your reply.

I am glad to hear that the problem was solved.

Please do not hesitate to contact us if you need any more advice or information.

Thank you for contacting us.

I have heard back from the lab with the following information:

All these assays require different sample concentrations described in each booklet protocol - but in most cases is approximately 10ug/micro...

Read More

Thank you for the extra details.

I am skeptical that the assay procedure, using acetaldehyde in solution, is the problem. The data you see on the datasheet is generated with the same protocol and reagents.

My colleague at MitoScie...

Read More

Yes you are correct it is Dulbecco’s PBS. I hope this is helpful. Please let me know if you need anything further.

1-10 of 11 Abreviews or Q&A


Sign up