ab109912 (MS747) is a novel assay that uses a high affinity monoclonal capture antibody to selectively isolate MAOB from all other peroxidases and oxidases (including MAOA) in a tissue or cultured cell sample.
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- Toxicology and applied pharmacology 358:10-222018Inflammatory mediators resulting from transglutaminase 2 expressed in mast cells contribute to the development of Parkinson's disease in a mouse model.Applications:Unspecified applicationReactive species:Unspecified reactive speciesGwan Ui Hong et. al.PubMed 30195017
Key facts
- Detection method
- Colorimetric
- Sample types
- Cell culture extracts, Tissue Extracts
- Assay type
- Enzyme activity
- Reactive species
- Human
Target data
Function
Catalyzes the oxidative deamination of primary and some secondary amines such as neurotransmitters, and exogenous amines including the tertiary amine, neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), with concomitant reduction of oxygen to hydrogen peroxide and participates in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues (PubMed:11049757, PubMed:11134050, PubMed:20493079, PubMed:8316221, PubMed:8665924). Preferentially degrades benzylamine and phenylethylamine (PubMed:11049757, PubMed:11134050, PubMed:20493079, PubMed:8316221, PubMed:8665924).
Alternative names
Amine oxidase [flavin-containing] B, Monoamine oxidase type B, MAO-B, MAOB
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ab109912 (MS747) is a novel assay that uses a high affinity monoclonal capture antibody to selectively isolate MAOB from all other peroxidases and oxidases (including MAOA) in a tissue or cultured cell sample.
Key facts
- Detection method
- Colorimetric
- Sample types
- Cell culture extracts, Tissue Extracts
- Assay type
- Enzyme activity
- Reactive species
- Human
- Assay Platform
- Microplate reader
Storage
- Shipped at conditions
- Dry Ice
- Appropriate short-term storage conditions
- Multi
- Appropriate long-term storage conditions
- Multi
- Storage information
- Please refer to protocols
Notes
ab109912 (MS747) is a novel assay that uses a high affinity monoclonal capture antibody to selectively isolate MAOB from all other peroxidases and oxidases (including MAOA) in a tissue or cultured cell sample. After isolation and subsequent measurement of the enzyme's functional activity, the quantity of isolated MAOB is measured in the same well by adding a second monoclonal detector antibody, which is quantified using a colorimetric label (HRP). Both reactions take place in time-dependent manners proportional to the amount of enzyme captured in each well. By combining activity and quantity measurements, the enzyme's relative specific activity can be determined. Specific activity is useful for measuring up or down regulation of activity by site-specific modification or damage, and in response to specific inhibitors.
Store Fluorophore and benzylamine at -80°C. Store all other components store at 4°C.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
Monoamine Oxidase B (MAO-B) also known as MAOB or MAO-B inhibitor is an enzyme that is a part of the flavin-containing amine oxidases group. It exists as a homodimer with each monomer having a mass of about 58 kDa. This enzyme plays an important role in the catabolism of monoamines by oxidizing neurotransmitters such as dopamine in the brain. MAO-B is expressed mainly in the outer membrane of mitochondria in neuronal and glial cells and to a lesser extent in other tissues like the liver.
- Biological function summary
The enzyme contributes to the breakdown of biogenic and dietary amines supporting neurotransmitter regulation and signal modulation. It does not work as part of a larger protein complex but has important interactions within its local cellular environment. MAO-B helps maintain the proper levels of monoamine neurotransmitters preventing their accumulation and potential neurotoxicity.
- Pathways
Monoamine Oxidase B functions in the dopamine and serotonin metabolic pathways where it actively participates in the oxidative deamination of monoamines. In these pathways MAO-B acts alongside other proteins such as Monoamine Oxidase A (MAO-A) which shares similar functions and substrate preferences. This enzyme activity helps modulate mood and emotional behaviors which are critical for normal brain function.
- Associated diseases and disorders
Monoamine Oxidase B has a significant connection with neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease. In Parkinson's disease MAO-B intensifies the oxidative stress by promoting dopamine breakdown which is linked to neuronal degeneration. In Alzheimer's disease elevated MAO-B activity may contribute to the overproduction of neurotoxic metabolites. Through these conditions MAO-B is often targeted by MAO-B inhibitors to reduce its activity alleviating symptoms and slowing disease progression.
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3 product images
Functional Studies - Monoamine oxidase B Activity Assay Kit ((MAOB Assay) (ab109912)
Figure 2. MAOB is selectively inhibited by selegiline and pargyline, but not clorgyline. In this example, raw data was exported to Graph Pad Prism for 4-parameter fit analysis and IC50 determination.
Functional Studies - Monoamine oxidase B Activity Assay Kit ((MAOB Assay) (ab109912)
Figure 1. With a HepG2 cell lysate MAOB activity was clearly measurable in the 16-1000 µg/ mL range and quantity in the range 1-1000 µg/mL. The MAOB specific inhibitor pargyline inhibited activity 90% while not affecting quantity.
Schematic Diagram - Monoamine oxidase B Activity Assay Kit ((MAOB Assay) (ab109912)
Abcam's protein quantity microplate assays use the well-established sandwich ELISA format, whereby capture and detector antibodies are used to immobilize and then quantify a target protein or enzyme. All of our microplate assays utilize our highly-validated immunocapture antibodies, which are able to capture large, multi-subunit enzyme complexes in their fully intact state. Capture antibodies are pre-coated in the wells of premium Nunc MaxiSorp™ modular microplates, which can be broken into 8-well strips. After the target has been immobilized in the well, a second monoclonal antibody, against a different epitope on the target, is added to the well. This detector antibody is either directly labeled with biotin, or a biotin-labeled goat anti-mouse secondary is added. Substrate plus HRP or AP conjugated to streptavidin provide a colorimetric signal that is readable by any plate readers capable of standard ELISA absorbance measurements.
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