| methyl hydroxybenzoate | Methylp-hydroxybenzoate;an antifungal preservative. Synonym: methyl hydroxybenzoate. (05 Mar 2000) |
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| polyprenyl-4-hydroxybenzoate carboxylase | <enzyme> Involved in polyprenylphenol synthesis; implicated in flagellation of salmonella typhimurium Registry number: EC 4.1.1.- Synonym: ppphb carboxylase, polyprenyl-p-hydroxybenzoate carboxylase (26 Jun 1999) |
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| propyl hydroxybenzoate | <chemical> An antifungal agent and pharmaceutical preservative. Chemical name: P-hydroxybenzoic acid propyl ester. Synonym: propyl hydroxybenzoate. (05 Mar 2000) |
| nonaprenyl-4-hydroxybenzoate transferase | <enzyme> Ph optimum 7.5; completely inhibited by triton x-100 and deoxycholate, but not by taurodeoxycholate and beta-octyl glucoside; mediates the transfer of the polyisoprenoid side chain to 4-hydroxybenzoate in ubiquinone biosynthesis Registry number: EC 2.5.1.- Synonym: n4hb transferase (26 Jun 1999) |
| 3-hydroxybenzoate-6-hydroxylase | <enzyme> From micrococcus; a flavoprotein; catalyses reversibly the hydroxylation of 3-hydroxybenzoate in the presence of NADH and o2 to form 2,5-dihydroxybenzoate, nad and h2o Registry number: EC 1.14.13.24 Synonym: 3-hydroxybenzoate-6-monooxygenase, 3-ohb-6-hydroxylase, 3-hydroxybenzoate 6-hydroxylase (26 Jun 1999) |
| 4-hydroxybenzoate-3-monooxygenase | <enzyme> A flavoprotein that catalyses the synthesis of protocatechuic acid from 4-hydroxybenzoate in the presence of molecular oxygen. Chemical name: 4-Hydroxybenzoate,NADPH:oxygen oxidoreductase (3-hydroxylating) Registry number: EC 1.14.13.2 (12 Dec 1998) |
| 4-hydroxybenzoate coenzyme A ligase | <enzyme> From rhodopseudomonas palustris; involved in anaerobic metabolism of 4-hydroxybenzoate Registry number: EC 6.2.1.- Synonym: 4-hydroxybenzoate-CoA ligase, 4-hb-CoA ligase (26 Jun 1999) |
| 4-hydroxybenzoate decarboxylase | <enzyme> Aromatic-dependent decarboxylase which provides growth-essential co2 equivalents for the acetogenic (wood) pathway of clostridium thermoaceticum Registry number: EC 4.1.1.- Synonym: phenol carboxylase (26 Jun 1999) |
| 4-hydroxybenzoate polyprenyltransferase | <enzyme> An intermediate in ubiquinone biosynthesis Registry number: EC 2.5.1.- Synonym: 4-hydroxybenzoate octaprenyltransferase, polyprenyl pyrophosphate-p-hydroxybenzoate polyprenyltransferase, para-hydroxybenzoate polyprenyltransferase, 4-ohb-pp-transferase, ubia gene product (26 Jun 1999) |
| 4-hydroxybenzoate synthase | <chemical> Complex associated with mitochondrial membranes of roots of cucumis sativus; converts p-coumaric acid to p-hydroxybenzoic acid; mechanism of multi-step reaction unclear Chemical name: synthase, p-hydroxybenzoate Synonym: para-hydroxybenzoate synthase, p-hydroxybenzoate synthase (26 Jun 1999) |
| active methyl | A methyl group attached to a quaternary ammonium ion or a tertiary sulfonium ion that can take part in transmethylation reactions; e.g., methyl groups in choline and in S-adenosyl-l-methionine, which are thus methyl donors. (05 Mar 2000) |
| aklanonic acid methyl ester cyclase | <enzyme> Catalyses the formation of aklaviketone from aklanonic acid methyl ester; involved in daunomycin biosynthesis; see also daunorubicin-doxorubicin polyketide synthase Registry number: EC 5.- Synonym: aame cyclase, daud protein, daud gene product, dnrd protein, dnrd gene product (26 Jun 1999) |
| alpha-(4-O-methyl)-D-glucuronidase | <enzyme> Removes 4-o-methyl-glucopyranosyl uronic acid residues from the 2-position of fungal cell wall xylans Registry number: EC 3.2.1.- Synonym: 4-o-methyl-glucuronidase (26 Jun 1999) |
| alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | <chemical> Alpha-amino-2,3-dihydro-5-methyl-3-oxo-4-isoxazolepropanoic acid. An ibotenic acid homolog and glutamate agonist. The compound is the defining agonist for the ampa subtype of glutamate receptors (receptors, ampa). It has been used as a radionuclide imaging agent but is more commonly used as an experimental tool in cell biological studies. Pharmacological action: excitatory amino acid agonists. Chemical name: 4-Isoxazolepropanoic acid, alpha-amino-2,3-dihydro-5-methyl-3-oxo- (12 Dec 1998) |
| alpha methyl dopa | <drug> An antihypertensive drug, preferred in pregnant patients. (18 Nov 1997) |
| angular methyl | A methyl group attached to carbon 10 (between rings A and B) or to carbon 13 (between rings C and D) of the steroid nucleus. (05 Mar 2000) |