| riboflavin synthase | <enzyme> An enzyme that catalyses the formation of riboflavin from two molecules of 6,7-dimethyl-8-ribityllumazine, utilizing a four-carbon fragment from one molecule which is transferred to the second molecule. Chemical name: 6,7-Dimethyl-8-(1-D-ribityl)lumazine:6,7-dimethyl-8-(1-D-ribityl)lumazine 2,3-butanediyltransferase Registry number: EC 2.5.1.9 (12 Dec 1998) |
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| ribose-1,5-diphosphate synthase | <enzyme> Uses ribose 1-(or 5)p as phosphoryl acceptor and acyl-p of 3-phosphoglyceroylphosphate as phosphoryl donor; similar reaction to glucose 1,6-bisphosphate synthase Registry number: EC 2.7.1.- Synonym: ribose-1,5-p2 synthase (26 Jun 1999) |
| chitin synthase | <enzyme> An enzyme that converts udp glucosamine into chitin and udp. Chemical name: UDP-N-acetyl-D-glucosamine:chitin 4-beta-N-acetylglucosaminyltransferase Registry number: EC 2.4.1.16 (12 Dec 1998) |
| chitobiosylpyrophosphoryldolichol synthase | <enzyme> Combined activity of EC 2.4.1.153 and EC 2.4.1.141 Registry number: EC 2.4.1.- Synonym: cbl synthase (26 Jun 1999) |
| methionine synthase | Tetrahydropteroylglutamate methyltransferase; methionine-homocysteine methyltransferase;an enzyme that catalyses the reaction of N5-methyltetrahydrofolate with l-homocysteine to form tetrahydrofolate and l-methionine; a cobalamin-requiring enzyme; a deficiency of this enzyme results in an accumulation of l-homocysteine and neurological abnormalities. Synonym: tetrahydrofolate methyltransferase. (05 Mar 2000) |
| methylcitrate synthase | <enzyme> Catalyses the synthesis of (2r,3s)-methylcitric acid; from the yeast candida lipolitica; more stereospecific than the animal citrate synthase enzyme Registry number: EC 4.1.3.- (26 Jun 1999) |
| methylformate synthase | <enzyme> Enzyme from methylotrophic yeasts catalyses formation of methylformate from formaldehyde and methanol in the presence of nad+; proposed mechanism is alcohol oxidation of an intermediate hemiacetal, ch2(oh)och3 Registry number: EC 1.1.1.- (26 Jun 1999) |
| 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) |
| chorismate synthase-flavin reductase | <chemical> Bifunctional enzyme from neurospora crassa Synonym: cs-fr enzyme (26 Jun 1999) |
| microcin B17 synthase | <chemical> Consists of mcbb, mcbc, and mcbd proteins; catalyses conversion of microcin b17 precursor to microcin b17 (26 Jun 1999) |
| cinnabarinate synthase | <enzyme> Reaction catalyzed by catalase, EC 1.11.1.6 Registry number: EC 1.11.1.- (26 Jun 1999) |
| phosphatidylinositol synthase | <enzyme> An enzyme that catalyses the reaction of CDP-diacylglycerol with inositol to form CMP and phosphatidylinositol; found in the endoplasmic reticulum. (20 Sep 2002) |
| citrate (si)-synthase | <enzyme> An enzyme of the lyase class that catalyses the condensation of oxaloacetate and the acetyl group of coenzyme a to form citrate and coenzyme a. This is the initial reaction in the tricarboxylic acid cycle. Chemical name: Citrate oxaloacetate-lyase ((pro-3S)-CH2COO(-)--acetyl-CoA) Registry number: EC 4.1.3.7 (12 Dec 1998) |
| citrate synthase | Citrate (si)-synthase;an enzyme catalyzing the condensation of oxaloacetate, water, and acetyl-CoA, forming citrate and coenzyme A; an important step in the tricarboxylic acid cycle. Synonym: citrogenase, condensing enzyme, oxaloacetate transacetase. (05 Mar 2000) |
| phosphoribosylanthranilate isomerase-indoleglycerol-phosphate synthase | <chemical> EC 5.3.1.24 plus EC 4.1.1.48 Synonym: pai-igps, indoleglycerol phosphate synthase-phosphoribosyl anthranilate isomerase, prai-igps (26 Jun 1999) |