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Monoamine oxidases (MAO) (EC 1.4.3.4) are a family of enzymes that catalyze the oxidation of monoamines, employing oxygen to clip off their amine group. They are found bound to the outer membrane of mitochondria in most cell types of the body. The first such enzyme was discovered in 1928 by Mary Bernheim in the liver and was named tyramine oxidase.
Monoamine oxidase inhibitors (MAOIs) are a class of drugs that inhibit the activity of one or both monoamine oxidase enzymes: monoamine oxidase A (MAO-A) and monoamine oxidase B (MAO-B). They are best known as effective antidepressants , especially for treatment-resistant depression and atypical depression . [1]
- MAOI, RIMA
- Enzyme inhibitor
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Monoamine oxidase (MAO) (monoamine; oxygen oxidoreductase, deaminating, EC 1.4.3.4) catalyzes the oxidative deamination of a number of biogenic amines in the brain and peripheral tissues by the production of hydrogen peroxide (H 2 O 2) (Shih 1991, Thorpe et al 1987).
- J. C. Shih, K. Chen, M. J. Ridd
- 10.1146/annurev.neuro.22.1.197
- 1999
- 1999
Oct 1, 2011 · Members of the monoamine oxidase family of flavoproteins catalyze the oxidation of primary and secondary amines, polyamines, amino acids, and methylated lysine side chains in proteins. The enzymes have similar overall structures, with conserved FAD-binding domains and varied substrate-binding sites.
- Helena Gaweska, Paul F. Fitzpatrick
- 10.1515/BMC.2011.030
- 2011
- 2011/10/10
Monoamine oxidase is the enzyme principally responsible for degradation of amine neurotransmitters (norepinephrine, epinephrine, serotonin, and dopamine). There are two isoenzymes of monoamine oxidase: monoamine oxidase A (MAO-A) and MAO-B. MAO-A preferentially deaminates serotonin, norepinephrine, and epinephrine as well as dietary ...
Nov 6, 2014 · Monoamine oxidase (MAO) isoenzymes A and B are mitochondrial-bound proteins that catalyze the oxidative deamination of dietary amines and monoamine transmitters. Others include: serotonin,...
