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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.
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-dioxygenase (EC 1.13.11.2), and protocatechuate 3,4 ...
The two enzymes were identified to be a part of two separate catechol dioxygenase families: 1,2-CTD was classified as an intradiol dioxygenase while 2,3-CTD was classified as an extradiol dioxygenase. The two enzymes can be distinguished based on their reaction products and cofactors. 1,2-CTD uses Fe 3+ as a cofactor to cleave the carbon-carbon ...
Doctors caution against skipping doses of GLP-1 weight-loss drugs like Wegovy because patients who discontinue the medication for a few weeks and then restart it are more likely to have side ...
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Indoleamine 2,3-dioxygenase is the first and rate-limiting enzyme of tryptophan catabolism through the kynurenine pathway. IDO is an important molecule in the mechanisms of tolerance and its physiological functions include the suppression of potentially dangerous inflammatory processes in the body. [ 16 ]