_EC 1.10.3.1 Catechol oxidase. 5 PDB entries  
EC 1.-.-.- Oxidoreductases. [9,199 PDB entries]
EC 1.10.-.- Acting on diphenols and related substances as donors. [215 PDB entries]
EC 1.10.3.- With oxygen as acceptor. [92 PDB entries]
EC 1.10.3.1 Catechol oxidase. [5 PDB entries]    
1bt1

Reaction: 2 catechol + O(2) = 2 1,2-benzoquinone + 2 H(2)O.
 


2 × catechol
+
O(2)
=
2 × 1,2-benzoquinone
+ 2 × H(2)O
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Other name(s): Diphenol oxidase. o-diphenolase. Phenolase. Polyphenol oxidase. Tyrosinase.
Cofactor(s): Cu cation.
Comments: 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.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 5 PDB entries in enzyme class E.C.1.10.3.1

  PDB code Protein
1bt1
Catechol oxidase from ipomoea batatas (sweet potatoes) in the native cu(ii)-cu(ii) state
Source: Ipomoea batatas. Sweet potato. Organism_taxid: 4120. Organ: mature tuber
Chains: A, B (336 residues) CATH domain: 1.10.1280.10
1bt2
Catechol oxidase from ipomoea batatas (sweet potatoes) in the reduced cu(i)-cu(i) state
Source: Ipomoea batatas. Sweet potato. Organism_taxid: 4120. Organ: mature tuber
Chains: A, B (336 residues) CATH domain: 1.10.1280.10
1bt3
Catechol oxidase from ipomoea batatas (sweet potatoes) in the native cu(ii)-cu(ii) state
Source: Ipomoea batatas. Sweet potato. Organism_taxid: 4120. Organ: mature tuber
Chain: A (336 residues) CATH domain: 1.10.1280.10
1bug
Catechol oxidase from ipomoea batatas (sweet potatoes)- inhibitor complex with phenylthiourea (ptu)
Source: Ipomoea batatas. Sweet potato. Organism_taxid: 4120. Organ: mature tuber
Chains: A, B (336 residues) CATH domain: 1.10.1280.10
Bound ligand:   Het Group URS is 50.00% similar to enzyme reactant catechol
2p3x
Crystal structure of grenache (vitis vinifera) polyphenol oxidase
Source: Vitis vinifera. Organism_taxid: 29760. Other_details: grape berries
Chain: A (339 residues) CATH domain: 1.10.1280.10