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Figure 1. The overall reaction of catechol 1,2-dioxygenase. Using a non-heme iron(III) complex, 1,2-CTD is able to oxidatively cleave catechol into cis,cis-muconic acid. More specifically, 1,2-CTD is an intradiol dioxygenase, a family of catechol dioxygenases that cleaves the bond between the phenolic hydroxyl groups of catechol using an Fe 3 ...
Catechol dioxygenases are metalloprotein enzymes that carry out the oxidative cleavage of catechols. This class of enzymes incorporate dioxygen into the substrate . Catechol dioxygenases belong to the class of oxidoreductases and have several different substrate specificities, including catechol 1,2-dioxygenase ( EC 1.13.11.1 ), catechol 2,3 ...
The catechol dioxygenases, some of the most well-studied dioxygenase enzymes, use dioxygen to cleave a carbon-carbon bond of an aromatic catechol ring system. [4] Catechol dioxygenases are further classified as being “extradiol” or “intradiol,” and this distinction is based on mechanistic differences in the reactions (figures 1 & 2).
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In enzymology, an anthranilate 1,2-dioxygenase (deaminating, decarboxylating) (EC 1.14.12.1) is an enzyme that catalyzes the chemical reaction anthranilate + NAD(P)H + 2 H + + O 2 ⇌ {\displaystyle \rightleftharpoons } catechol + CO 2 + NAD(P)+ + NH 3
Likewise, the unrelated enzymes methylmalonyl-CoA epimerase, 3-demethylubiquinone-9 3-O-methyltransferase and numerous dioxygenases such as biphenyl-2,3-diol 1,2-dioxygenase, catechol 2,3-dioxygenase, 3,4-dihydroxyphenylacetate 2,3-dioxygenase and 4-hydroxyphenylpyruvate dioxygenase all resemble glyoxalase I in structure. [1]
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Homogentisate 1,2-dioxygenase (homogentisic acid oxidase, homogentisate oxidase, homogentisicase) is an enzyme which catalyzes the conversion of homogentisate to 4-maleylacetoacetate. Homogentisate 1,2-dioxygenase or HGD is involved in the catabolism of aromatic rings, more specifically in the breakdown of the amino acids tyrosine and ...