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Products:Signal Transduction >> Metabolism >> Energy Metabolism
MSCatalog No. MSP30-30
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Read our guarantee »Pyruvate dehydrogenase (PDH) Enzyme Activity Dipstick Assay Kit
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Cell culture extracts, Tissue
Quantitative
Reacts with
Mouse, Rat, Cow, Human, Pig
ab109882 is used to quantify the activity of the PDH enzyme complex from human, bovine, mouse, rat and pig samples. This is accomplished by immunocapturing PDH with an anti-PDH antibody immobilized on a defined section of a dipstick. The enzyme complex is immunocaptured in its native form and activity is measured by the reaction scheme. PDH activity is visualized by coupling PDH-dependent production of NADH to the reduction of NBT in the presence of excess diaphorase, forming an insoluble intensely colored precipitate at the capture line. The signal intensity is measured by a dipstick reader or analyzed by other imaging systems such as a flatbed scanner.
Purified mitochondria can be used in this assay. However, homogenized tissue and whole cells can also be used without the need for mitochondrial isolation.
Pyruvate dehydrogenase activity is regulated by PDH kinase and PDH phosphatase. Cells grown in glucose media derive most of their energy from glycolysis; therefore, most of their PDH complex may be in an inactive phosphorylated form at the time of isolation. Growing cells in alternate carbon sources such as glutamine/galactose may up-regulate PDH activity. This kit does not include PDH kinases, PDH phosphatases or their respective inhibitors. These may be incorporated into the assay at the user’s discretion.
Functional Studiesmore details
Please see Notes section
| Components | 90 tests | 30 tests |
|---|---|---|
| 20X Reagent Mix | 1 x 1800µl | 1 x 600µl |
| 96-well microplate | 6 units | 2 units |
| Blocking solution | 1 x 6ml | 1 x 2ml |
| Detergent | 1 x 3ml | 1 x 1ml |
| Diaphorase | 1 x 1200µl | 1 x 400µl |
| Dipsticks | 1 x 90 units | 1 x 30 tests |
| NBT | 1 x 120µl | 1 x 40µl |
| Sample buffer | 1 x 90ml | 1 x 30ml |
Metabolism >> Pathways and Processes >> Metabolic signaling pathways >> Energy transfer pathways >> Energy Metabolism
Metabolism >> Pathways and Processes >> Metabolic signaling pathways >> Carbohydrate metabolism
Metabolism >> Pathways and Processes >> Mitochondrial Metabolism >> Mitochondrial markers
Cancer >> Cancer Metabolism >> Metabolic signaling pathway >> Metabolism of carbohydrates
Kits/ Lysates/ Other >> Kits >> Cell Metabolism Kits >> Other Metabolism Assay
Signal Transduction >> Metabolism >> Mitochondrial
Signal Transduction >> Metabolism >> Energy Metabolism
Our Abpromise guarantee covers the use of ab109882 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
FuncS
Functional Studies - Pyruvate dehydrogenase (PDH) Enzyme Activity Dipstick Assay Kit (ab109882)
Abcam's enzyme activity assays apply a novel approach, whereby target enzymes are first immunocaptured from tissue or cell samples before subsequent functional analysis. Dipstick ELISA Kits extend this concept by utilizing the well-established lateral flow concept, wherein capture antibodies are striped onto nitrocellulose membrane and a wicking pad draws the sample through the antibody bands. All of our ELISA kits utilize highly validated monoclonal antibodies and proprietary buffers, which are able to capture even very large enzyme complexes in their fully-intact, functionally-active states.
- Pyruvate dehydrogenase (PDH) Enzyme Activity Dipstick Assay Kit (ab109882)

Figure 1. An example using the ab109882 to measure PDH activity in human fibroblast sample. Developed dipsticks from a 1:2 dilution series using a positive control sample and the associated standard curve. Starting material was 160 µg of fibroblast protein extract in a 100 µL reaction volume (50 µL sample in Sample buffer plus 50 µL of Blocking solution). The dipsticks were developed for 1 hour in Activity buffer.
- Pyruvate dehydrogenase (PDH) Enzyme Activity Dipstick Assay Kit (ab109882)

Figure 2. An example using the ab109882 to measure PDH activity in human fibroblast sample. Based on the standard curve, 160 µg of protein extract were loaded onto a dipstick for each sample. The figure shows two developed dipsticks, a control sample and a sample from a patient with a mutation in the E1-alpha subunit of PDH. The analysis of the signal intensity and interpolation from the standard curve showed that the patient sample had 8% the PDH activity of the control.
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Abcam's enzyme activity assays apply a novel approach, whereby target enzymes are first immunocaptured from tissue or cell samples before subsequent functional analysis. Dipstick ELISA Kits extend this concept by utilizing the well-established lateral flow concept, wherein capture antibodies are striped onto nitrocellulose membrane and a wicking pad draws the sample through the antibody bands. All of our ELISA kits utilize highly validated monoclonal antibodies and proprietary buffers, which are able to capture even very large enzyme complexes in their fully-intact, functionally-active states.

Figure 1. An example using the ab109882 to measure PDH activity in human fibroblast sample. Developed dipsticks from a 1:2 dilution series using a positive control sample and the associated standard curve. Starting material was 160 µg of fibroblast protein extract in a 100 µL reaction volume (50 µL sample in Sample buffer plus 50 µL of Blocking solution). The dipsticks were developed for 1 hour in Activity buffer.

Figure 2. An example using the ab109882 to measure PDH activity in human fibroblast sample. Based on the standard curve, 160 µg of protein extract were loaded onto a dipstick for each sample. The figure shows two developed dipsticks, a control sample and a sample from a patient with a mutation in the E1-alpha subunit of PDH. The analysis of the signal intensity and interpolation from the standard curve showed that the patient sample had 8% the PDH activity of the control.
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