| methylglucamine diatrizoate | N-methylglucamine salt of 3,5-diacetamido-2,4,6-triiodobenzoic acid;a water-soluble organic iodine compound used for excretory urography, for contrast visualization of the cardiovascular system, and orally for opacification of the gastrointestinal tract. Synonym: methylglucamine diatrizoate. (05 Mar 2000) |
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| methylglutaconyl-CoA hydratase | <enzyme> Catalyses conversion of 3-hydroxy-3-methylglutaryl-CoA to trans-3-methylglutaconyl-CoA and water Registry number: EC 4.2.1.18 Synonym: 3-hydroxy-3-methylglutaryl-CoA hydro-lyase, 3-methylglutaconyl-coenzyme a hydratase, 3-methylglutaconyl-CoA hydratase (26 Jun 1999) |
| methylglyoxal | CH3-CO-CHO; Pyruvaldehyde;the aldehyde of pyruvic acid; an intermediate of carbohydrate metabolism in certain organisms. Synonym: pyruvic aldehyde. Methylglyoxal bis(guanylhydrazone), 1,1'-[(methylethanediylidene)dinitrilo]diguanidine;an antineoplastic agent. (05 Mar 2000) |
| methylglyoxal dehydrogenase | <enzyme> Oxidises methylglyoxal to pyruvate; requires nad Registry number: EC 1.2.1.- (26 Jun 1999) |
| methylglyoxalase | <enzyme> An enzyme that catalyses the interconversion of methylglyoxal and lactate, with glutathione serving as a coenzyme. Chemical name: S-Lactoyl-glutathione methylglyoxal-lyase (isomerizing) Registry number: EC 4.4.1.5 (12 Dec 1998) |
| methylguanidine | <chemical> A product of putrefaction. Poisonous. Chemical name: Guanidine, methyl- (12 Dec 1998) |
| methylguanidine synthase | <enzyme> Flavoprotein from rat kidney lysosomes and peroxisomes; converts creatol to methylguanidine; requires oxygen; mechanism not known 4/93, but may be an oxygenase Registry number: EC 1.13.99.- (26 Jun 1999) |
| methylhexaneamine | 4-Methyl-2-hexylamine;a volatile sympathetic amine base, used as an inhalant nasal decongestant. (05 Mar 2000) |
| methylhistamines | Histamine substituted in any position with one or more methyl groups. Many of these are agonists for the h1, h2, or both histamine receptors. (12 Dec 1998) |
| methylhistidines | Histidine substituted in any position with one or more methyl groups. (12 Dec 1998) |
| methylhydrazines | Hydrazines substituted by one or more methyl groups in any position. (12 Dec 1998) |
| methylic | <chemistry> Pertaining to, derived from, or containing, methyl; specifically, designating methyl alcohol. See Methyl. Source: Websters Dictionary (01 Mar 1998) |
| methylkinase | <enzyme> That transfers a methyl group from S adenosyl methionine to a substrate. most commonly encountered in bacterial chemotaxis where the methyl accepting chemotaxis proteins (MCPs) become methylated in the course of adaptation. (18 Nov 1997) |
| methylmalonate saemialdehyde | OHC-CH(CH3)-COO-;an intermediate in l-valine catabolism; elevated in certain inborn disorders. (05 Mar 2000) |
| methylmalonic acid | <chemical> Methylpropanedioic acid. A malonic acid derivative which is a vital intermediate in the metabolism of fat and protein. Abnormalities in methylmalonic acid metabolism lead to methylmalonic aciduria. This metabolic disease is attributed to a block in the enzymatic conversion of methylmalonyl CoA to succinyl CoA. Chemical name: Propanedioic acid, methyl- (12 Dec 1998) |