| arylformamidase | <enzyme> An enzyme that catalyses the conversion of n-formyl-l-kynurenine and water to formate and l-kynurenine. It also acts on other aromatic formylamines. (enzyme nomenclature, 1992) Chemical name: Aryl-formylamine amidohydrolase Registry number: EC 3.5.1.9 (12 Dec 1998) |
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| arylsulfatase | <enzyme> An enzyme that cleaves phenol sulfates, including cerebroside sulfates (i.e., a phenol sulfate + H2O → a phenol + sulfate anion). Some arylsulfatases are inhibited by sulfate (type II) and some are not (type I). Synonym: sulfatase. (05 Mar 2000) |
| arylsulfatases | <enzyme> Enzymes that catalyze the hydrolysis of a phenol sulfate to yield a phenol and sulfate. Arylsulfatase a, b, and c have been separated. A deficiency of arylsulfatases is one of the causes of metachromatic leukodystrophy (leukodystrophy, metachromatic). Chemical name: Aryl-sulfate sulfohydrolase Registry number: EC 3.1.6.1 (12 Dec 1998) |
| arylsulfate sulfotransferase | <enzyme> From a human intestinal bacterium; catalyses the transfer of the sulfate group of phenylsulfate esters to phenolic compounds Registry number: EC 2.8.2.22 Synonym: asstase, arylsulfate-phenol sulfotransferase (26 Jun 1999) |
| arylsulfonates | Organic sulfonic acid esters or salts which contain an aromatic hydrocarbon radical. (12 Dec 1998) |
| arylsulfonic acids | Organic sulfonic acid derivatives which contain an aromatic hydrocarbon radical. (12 Dec 1998) |
| arylsulfotransferase | <enzyme> A sulfotransferase that catalyses the sulfation of a phenol in the presence of 3'-phosphoadenylylsulfate as sulfate donor to yield an aryl sulfate and adenosine 3',5'-bisphosphate. A number of aromatic compounds can act as acceptors; however, organic hydroxylamines are not substrates. Sulfate conjugation by this enzyme is a major pathway for the biotransformation of phenolic and catechol drugs as well as neurotransmitters. Chemical name: 3'-Phosphoadenylylsulfate:phenol sulfotransferase Registry number: EC 2.8.2.1 (12 Dec 1998) |