| glutathione synthase | <enzyme> One of the enzymes active in the gamma-glutamyl cycle. It catalyses the synthesis of glutathione from gamma-glutamylcysteine and glycine in the presence of ATP with the formation of ADP and orthophosphate. Chemical name: gamma-L-Glutamyl-L-cysteine:glycine ligase (ADP-forming) Registry number: EC 6.3.2.3 (12 Dec 1998) |
|---|---|
| glycine synthase | A complex of several proteins that catalyze the reversible reaction of glycine with tetrahydrofolate to produce CO2, NH3, and N5,N10-methylenetetrahydrofolate; a deficiency of this enzyme (or one of its subunits) will result in nonketotic hyperglycinaemia. Synonym: glycine synthase. (05 Mar 2000) |
| glycogen synthase | <enzyme> An enzyme of the transferase class that catalyses the reaction of udpglucose and (1,4-alpha-d-glucosyl)n to yield udp and 1,4-alpha-d-glucosyl)n+1. The reaction is highly regulated by allosteric effectors, by phosphorylation reactions, and by insulin. Chemical name: UDPglucose:glycogen 4-alpha-D-glucosyltransferase Registry number: EC 2.4.1.11 (12 Dec 1998) |
| glycogen synthase-d phosphatase | <enzyme> An enzyme that catalyses the conversion of phosphorylated, inactive glycogen synthase d to active dephosphoglycogen synthase I. Chemical name: (UDPglucose:glycogen 4-alpha-D-glucosyltransferase-D) phosphohydrolase Registry number: EC 3.1.3.42 (12 Dec 1998) |
| resveratrol synthase | <enzyme> Catalyses the formation of resveratrol from coumaroyl-CoA and malonyl-CoA Registry number: EC 2.3.1.- (26 Jun 1999) |
| membrane-bound proton-translocating PPi synthase | <enzyme> From rhodospirillum rubrum; functions as an alternative coupling factor; n,n'-dicyclohexylcarbodiimide-sensitive; catalyses the phosphorylation of pi to ppi, the hydrolysis of ppi and the concomitant translocation of proton across the plasma membrane Registry number: EC 3.6.1.- Synonym: h(+)-ppi synthase (26 Jun 1999) |
| 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) |
| 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) |