• USA Home
  • MAK136 - Monoamine Oxidase Activity Assay Kit

MAK136 Sigma-Aldrich

Monoamine Oxidase Activity Assay Kit

sufficient for 100 fluorometric tests

Synonym: MAO Assay Kit



Related Categories Assay Kits by Specialty Area, Blood and Urine Chemistry Assay Kits, Cell Biology, Enzymatic Activity Assay Kits, Enzymatic Kits for the Quantitation of Nutrients and Metabolites,
usage   sufficient for 100 fluorometric tests
storage temp.   −20°C
Gene Information   human ... MAOA(4128), MAOB(4129)
mouse ... MAOA(17161), MAOB(109731)
rat ... MAOA(29253), MAOB(25750)


General description

Monoamine oxidases (MAO, EC are a family of mitochondrial enzymes that catalyze the oxidative deamination of monoamines. In mammals, MAO consists of two isoenzymes, MAO-A and MAO-B. MAO dysfunction is thought to be responsible for a number of neurological disorders. Unusually high or low levels of MAO in the body have been associated with depression, schizophrenia, substance abuse, attention deficit disorder, migraines, and irregular sexual maturation. MAO inhibitors are one of the major classes of drug prescribed for the treatment of depression.


Monoamine Oxidase Activity Assay Kit has been used to estimate MAO-A (monoamine oxidase A), MAO-B (monoamine oxidase B) and ALDH (aldehyde dehydrogenase) activities.

Features and Benefits

Compatible with high-throughput handling systems.


Suitable for the determination of MAO activity in biological samples and for the screening of MAO inhibitors. Can determine either MAO-A, MAO-B or both MAO-A and MAO-B activity.


The Monoamine Oxidase Assay Kit provides a convenient fluorimetric means to measure MAO enzyme activity in biological samples. In the assay, MAO reacts with p-tyramine, a substrate for both MAO-A and MAO-B, resulting in the formation of H2O2, which is determined by a fluorimetric method (λex = 530/λem = 585 nm). The assay is simple, sensitive, stable, and high-throughput adaptable. Unit definition: one unit of MAO catalyzes the formation of 1 μmole of H2O2 per minute under the assay conditions.

Safety & Documentation

Safety Information

GHS05  GHS05
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport


Certificate of Analysis


Making Headway
Protocols & Articles
Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?