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ENZYME entry: EC 1.4.3.21

Accepted Name
Primary-amine oxidase.
Alternative Name(s)
Amine oxidase.
Amine oxidase (copper-containing).
Benzylamine oxidase.
CAO.
Copper amine oxidase.
Reaction catalysed
RCH(2)NH(2) + H(2)O + O(2) <=> RCHO + NH(3) + H(2)O(2)
Comment(s)
  • A group of enzymes that oxidize primary monoamines but have little or no activity toward diamines, such as histamine, or toward secondary and tertiary amines.
  • They are copper quinoproteins (2,4,5-trihydroxyphenylalanine quinone) and, unlike EC 1.4.3.4, are sensitive to inhibition by carbonyl-group reagents, such as semicarbazide.
  • In some mammalian tissues the enzyme also functions as a vascular- adhesion protein (VAP-1).
  • Formerly EC 1.4.3.6.
Cross-references
BRENDA1.4.3.21
EC2PDB1.4.3.21
ExplorEnz1.4.3.21
PRIAM enzyme-specific profiles1.4.3.21
KEGG Ligand Database for Enzyme Nomenclature1.4.3.21
IUBMB Enzyme Nomenclature1.4.3.21
IntEnz1.4.3.21
MEDLINEFind literature relating to 1.4.3.21
MetaCyc1.4.3.21
UniProtKB/Swiss-Prot
Q07121, AMO1_ARTS1;  P0DO00, AMO2_ARATH;  Q07123, AMO2_ARTS1;  
Q8H1H9, AMO_ARATH;  P46883, AMO_ECOLI;  P49250, AMO_KLEAE;  
P80695, AMO_KLEOK;  P49252, AMO_LENCU;  Q43077, AMO_PEA;  
P12807, AMO_PICAN;  O23349, AO1_ARATH;  O75106, AOC2_HUMAN;  
Q812C9, AOC2_MOUSE;  Q9TTK6, AOC3_BOVIN;  Q16853, AOC3_HUMAN;  
O70423, AOC3_MOUSE;  Q5R9I0, AOC3_PONAB;  O08590, AOC3_RAT;  
Q29437, AOCX_BOVIN;  O46406, AOCY_BOVIN;  Q9P7F2, CAO1_SCHPO;  
O42890, CAO2_SCHPO;  P46881, PAOX_ARTGO;  

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