| dimethylallyltranstransferase | <enzyme> An enzyme that, in the pathway of cholesterol biosynthesis, catalyses the condensation of isopentenyl pyrophosphate and dimethylallylpyrophosphate to yield pyrophosphate and geranylpyrophosphate. The enzyme then catalyses the condensation of the latter compound with another molecule of isopentenyl pyrophosphate to yield pyrophosphate and farnesylpyrophosphate. Chemical name: Dimethylallyl-diphosphate:isopentenyl-diphosphate dimethylallyl (trans) transferase Registry number: EC 2.5.1.1 (12 Dec 1998) |
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| dimethylamine dehydrogenase | <enzyme> From hyphomicrobium, 6-s-cysteinyl-fmn is coenzyme Registry number: EC 1.5.99.- (26 Jun 1999) |
| dimethylamine-coenzyme M methyltransferase | <enzyme> A corrinoid protein from methanosarcina barkeri Registry number: EC 2.1.1.- Synonym: dimethylamine hs-com methyltransferase, dmcm methyltransferase (26 Jun 1999) |
| dimethylaminoazobenzene | C6H5N:NC6H4N(CH3)2;a fat-soluble yellow dye (MW 225) that has hepatic carcinogenic action in experimental animals; used as an indicator of pH (red, at pH 2.9, yellow at pH 4.0). Synonym: dimethylaminoazobenzene, methyl yellow. (05 Mar 2000) |
| dimethylargininase | <enzyme> Catalyses the formation of citrulline and dimethylamine from dimethylarginine; highly specific for n(g),n(g)-dimethylarginine and n(g)-monomethylarginine; mw 33kda Registry number: EC 3.5.3.18 Synonym: dada-hydrolase, n(g),n(g)-dimethylarginine dimethylaminohydrolase (26 Jun 1999) |
| dimethylarsinic acid | <chemical> An arsenical that has been used as a dermatologic agent and as an herbicide. Pharmacological action: dermatologic agents, herbicides. Chemical name: Arsinic acid, dimethyl- (12 Dec 1998) |
| dimethylbenzene | <chemistry> Same as Xylene. Origin: Xylo- + L. Oleum oil. Source: Websters Dictionary (01 Mar 1998) |
| dimethylcarbinol | Used as a component of various cosmetics and astringents, when taken internally can be toxic (27 Sep 1997) |
| dimethyldithiocarbamate | A chemical that acts as a dopamine beta-hydroxylase inhibitor. Its salts are agricultural fungicides. It is inferior to diethyldithiocarbamate as a chelating agent. (12 Dec 1998) |
| dimethylethanolamine kinase | <enzyme> Rat liver enzyme different from ethanolamine kinase, monomethylethanolamine kinase and choline kinase Registry number: EC 2.7.1.- Synonym: dea kinase, deanol kinase (26 Jun 1999) |
| dimethylformamide | <chemical> Chemical name: Formamide, N,N-dimethyl- (12 Dec 1998) |
| dimethylglycine dehydrogenase | <enzyme> Chemical name: n,n-dimethylglycine oxidoreductase Registry number: EC 1.5.99.2 (26 Jun 1999) |
| dimethylhydrazines | <chemical> Hydrazines substituted with two methyl groups in any position. Pharmacological action: carcinogens. (12 Dec 1998) |
| dimethylmercury | A contaminant of seafood products synthesised in sediments from mercury and mercury-containing chemicals dumped in waters supporting marine life. The methylmercury is concentrated in aquatic life forms and can thus be deposited in fishes intended for human consumption. Probable cause of Minimata disease, a teratogenic condition characterised by multiple birth defects. An inorganic reagent. See: Minamata disease. Synonym: methylmercury. (05 Mar 2000) |
| dimethylnitrosamine | <chemical> N-nitrosodimethylamine. A nitrosamine derivative with alkylating, carcinogenic, and mutagenic properties. It causes serious liver damage and is a hepatocarcinogen in rodents. Pharmacological action: alkylating agents, carcinogens, mutagens. Chemical name: Methanamine, N-methyl-N-nitroso- (12 Dec 1998) |