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Literature summary for 1.10.3.1 extracted from

  • Koval,I.A.; Selmeczi, K.; Belle, C.; Philouze, C.; Saint-Aman, E.; Gautier-Luneau, I.; Schuitema, A.M.; van Vliet, M.; Gamez, P.; Roubeau, O.; Lueken, M.; Krebs, B.; Lutz, M.; Spek, A.L.; Pierre, J.L.; Reedijk, J.
    Catecholase activity of a copper(II) complex with a macrocyclic ligand: unraveling catalytic mechanisms (2006), Chem. Eur. J., 12, 6138 - 6150.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
hydrogen peroxide activating at higher concentrations, however, the concentration of dihydrogen peroxide, formed during the reaction, does not reach this level Ipomoea batatas

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
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additional information kinetics, tetranuclear carbonato-bridged copper(II) cluster with the macrocyclic ligand, overview Ipomoea batatas

Organism

Organism UniProt Comment Textmining
Ipomoea batatas
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Reaction

Reaction Comment Organism Reaction ID
2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O catalytic reaction mechanism of the enzyme in a copper(II) complex with a macrocyclic ligand Ipomoea batatas

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3,5-di-tert-butylcatechol + O2 mechanism, the rate-determining step is found to change with the substrate to complex ratio, I2+ reacts with DTBCH2, while undergoing a one-electron reduction, leading to the formation of mixed-valence CuIICuI–semiquinone species DTSQ Ipomoea batatas 3,5-di-tert-butyl-o-benzoquinone + H2O
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catechol + 1/2 O2
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Ipomoea batatas 1,2-benzoquinone + H2O
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additional information reduction of dioxygen to dihydrogen peroxide upon catechol oxidation by copper(II) complexes, overview, dioxygen undergoes a two-electron reduction to dihydrogen peroxide, and a second mechanism in which it is converted into water upon four-electron reduction, catecholase activity of a tetranuclear carbonato-bridged copper(II) cluster with the macrocyclic ligand 9,22-dipropyl-1,4,9,14,17,22,27,28,29,30-decaazapentacyclotriacontane-5,7(28),11(29),12,18,20(30),24(27),25-octaene, ferromagnetic interaction between the two copper ions within one macrocyclic ring, and a weak antiferromagnetic interaction between the two neighboring copper ions of two different macrocyclic units, solution stability, electrochemical properties, and crystal structure of (I)2(CF3SO3)4 - 2CH3CN- 4H2O, detailed overview, mechanisms versus a coordination mode of the substrate Ipomoea batatas ?
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Synonyms

Synonyms Comment Organism
catechol oxidase
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Ipomoea batatas
catecholase
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Ipomoea batatas