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The systematic name of this enzyme class is benzene,NADH:oxygen oxidoreductase (1,2-hydroxylating). Other names in common use include benzene hydroxylase , and benzene dioxygenase . Biological role
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).
Aromatic-ring-hydroxylating dioxygenases (ARHD) incorporate two atoms of dioxygen (O 2) into their substrates in the dihydroxylation reaction.The product is (substituted) cis-1,2-dihydroxycyclohexadiene, which is subsequently converted to (substituted) benzene glycol by a cis-diol dehydrogenase.
Benzene is an organic chemical compound with the molecular formula C 6 H 6. ... In bacteria, dioxygenase enzyme can add an oxygen to the ring, ...
Benzene 1,2-dioxygenase; The substrate specificity of these enzymes is low. Enantiomeric purities in excess of 90% are routine but varies with substrate. For instance, 1,4-substituted benzenes often render diols of lower enantiomeric purity. However, accessing the "unnatural" enantiomer of product is often difficult without tailored enzymes. (1)
Hydroquinone 1,2-dioxygenase (EC 1.13.11.66, hydroquinone dioxygenase) is an enzyme with systematic name benzene-1,4-diol:oxygen 1,2-oxidoreductase (decyclizing). [ 1 ] [ 2 ] [ 3 ] This enzyme catalyses the following chemical reaction
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Molecular structure of tryptophan 2,3-dioxygenase An oxygenase is any enzyme that oxidizes a substrate by transferring the oxygen from molecular oxygen O 2 (as in air) to it. The oxygenases form a class of oxidoreductases ; their EC number is EC 1.13 or EC 1.14.