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A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.

ENZYME entry: EC 1.10.3.1

Accepted Name
Catechol oxidase.
Alternative Name(s)
Diphenol oxidase.
o-diphenolase.
Phenolase.
Polyphenol oxidase.
Tyrosinase.
Reaction catalysed
2 catechol + O(2) <=> 2 1,2-benzoquinone + 2 H(2)O
Cofactor(s)
Cu cation.
Comment(s)
  • A type 3 copper protein that catalyzes exclusively the oxidation of catechols (i.e., o-diphenols) to the corresponding o-quinones.
  • The enzyme also acts on a variety of substituted catechols.
  • It is different from tyrosinase, EC 1.14.18.1, which can catalyze both the monooxygenation of monophenols and the oxidation of catechols.
Cross-references
PROSITEPDOC00398
BRENDA1.10.3.1
EC2PDB1.10.3.1
ExplorEnz1.10.3.1
PRIAM enzyme-specific profiles1.10.3.1
KEGG Ligand Database for Enzyme Nomenclature1.10.3.1
IUBMB Enzyme Nomenclature1.10.3.1
IntEnz1.10.3.1
MEDLINEFind literature relating to 1.10.3.1
MetaCyc1.10.3.1
UniProtKB/Swiss-Prot
Q9ZP19, PPO1_IPOBA;  Q9MB14, PPO2_IPOBA;  Q08303, PPOA_SOLLC;  
Q08304, PPOB_SOLLC;  Q06355, PPOB_SOLTU;  Q08305, PPOC_SOLLC;  
Q08306, PPOD_SOLLC;  Q08307, PPOE_SOLLC;  Q08296, PPOF_SOLLC;  
P43309, PPO_MALDO;  O81103, PPO_PRUAR;  P43310, PPO_SPIOL;  
Q06215, PPO_VICFA;  P43311, PPO_VITVI;  P85026, PPO_ZINOF;  

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