ENZYME entry: EC 1.10.3.11

Accepted Name
Ubiquinol oxidase (non-electrogenic).
Alternative Name(s)
Cyanide-insensitive oxidase.
Plant alternative oxidase.
Ubiquinol oxidase.
Reaction catalysed
2 ubiquinol + O(2) <=> 2 ubiquinone + 2 H(2)O
Cofactor(s)
Fe cation.
Comment(s)
  • The enzyme, described from the mitochondria of plants and some fungi and protists, is an alternative terminal oxidase that is not sensitive to cyanide inhibition and does not generate a proton motive force.
  • The function of this oxidase is believed to be dissipating excess reducing power, minimizing oxidative stress, and optimizing photosynthesis in response to changing conditions.
Cross-references
BRENDA1.10.3.11
EC2PDB1.10.3.11
ExplorEnz1.10.3.11
PRIAM enzyme-specific profiles1.10.3.11
KEGG Ligand Database for Enzyme Nomenclature1.10.3.11
IUBMB Enzyme Nomenclature1.10.3.11
IntEnz1.10.3.11
MEDLINEFind literature relating to 1.10.3.11
MetaCyc1.10.3.11
UniProtKB/Swiss-Prot
Q39219, AOX1A_ARATH;  O23913, AOX1B_ARATH;  O22048, AOX1C_ARATH;  
Q40294, AOX1_MANIN;  P22185, AOX1_SAUVE;  Q07185, AOX1_SOYBN;  
Q41224, AOX1_TOBAC;  O22049, AOX2_ARATH;  Q41266, AOX2_SOYBN;  
Q40578, AOX2_TOBAC;  Q8LEE7, AOX3_ARATH;  O03376, AOX3_SOYBN;  
Q56X52, AOX4_ARATH;  F4P6T0, AOX_BATDJ;  D5JAJ1, AOX_TRAHO;  

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