The Enzyme Database

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EC 1.4.3.4     
Accepted name: monoamine oxidase
Reaction: RCH2NHR′ + H2O + O2 = RCHO + R′NH2 + H2O2
Other name(s): adrenalin oxidase; adrenaline oxidase; amine oxidase (ambiguous); amine oxidase (flavin-containing); amine:oxygen oxidoreductase (deaminating) (flavin-containing); epinephrine oxidase; MAO; MAO A; MAO B; MAO-A; MAO-B; monoamine oxidase A; monoamine oxidase B; monoamine:O2 oxidoreductase (deaminating); polyamine oxidase (ambiguous); serotonin deaminase; spermidine oxidase (ambiguous); spermine oxidase (ambiguous); tyraminase; tyramine oxidase
Systematic name: amine:oxygen oxidoreductase (deaminating)
Comments: A mitochondrial outer-membrane flavoprotein (FAD) that catalyses the oxidative deamination of neurotransmitters and biogenic amines [3]. Acts on primary amines, and also on some secondary and tertiary amines. It differs from EC 1.4.3.21, primary-amine oxidase as it can oxidize secondary and tertiary amines but not methylamine. This enzyme is inhibited by acetylenic compounds such as chlorgyline, 1-deprenyl and pargyline but, unlike EC 1.4.3.21 and EC 1.4.3.22 (diamine oxidase), it is not inhibited by semicarbazide.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, UM-BBD, CAS registry number: 9001-66-5
References:
1.  Blaschko, H. Amine oxidase. In: Boyer, P.D., Lardy, H. and Myrbäck, K. (Eds), The Enzymes, 2nd edn, vol. 8, Academic Press, New York, 1963, pp. 337–351.
2.  Dostert, P.L., Strolin Benedetti, M. and Tipton, K.F. Interactions of monoamine oxidase with substrates and inhibitors. Med. Res. Rev. 9 (1989) 45–89. [PMID: 2644497]
3.  Edmondson, D.E., Mattevi, A., Binda, C., Li, M. and Hubálek, F. Structure and mechanism of monoamine oxidase. Curr. Med. Chem. 11 (2004) 1983–1993. [PMID: 15279562]
4.  Shih, J.C. and Chen, K. Regulation of MAO-A and MAO-B gene expression. Curr. Med. Chem. 11 (2004) 1995–2005. [PMID: 15279563]
5.  Tipton, K.F., Boyce, S., O'Sullivan, J., Davey, G.P. and Healy, J. Monoamine oxidases: certainties and uncertainties. Curr. Med. Chem. 11 (2004) 1965–1982. [PMID: 15279561]
6.  De Colibus, L., Li, M., Binda, C., Lustig, A., Edmondson, D.E. and Mattevi, A. Three-dimensional structure of human monoamine oxidase A (MAO A): relation to the structures of rat MAO A and human MAO B. Proc. Natl. Acad. Sci. USA 102 (2005) 12684–12689. [PMID: 16129825]
7.  Youdim, M.B., Edmondson, D. and Tipton, K.F. The therapeutic potential of monoamine oxidase inhibitors. Nat. Rev. Neurosci. 7 (2006) 295–309. [PMID: 16552415]
8.  Youdim, M.B. and Bakhle, Y.S. Monoamine oxidase: isoforms and inhibitors in Parkinson′s disease and depressive illness. Br. J. Pharmacol. 147 Suppl. 1 (2006) S287–S296. [PMID: 16402116]
[EC 1.4.3.4 created 1961, modified 1983 (EC 1.4.3.9 created 1972, incorporated 1984), modified 2008]
 
 


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