| 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) |
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| 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) |
| clavaminate synthase | <enzyme> From streptomyces clavuligerus; convers proclavaminic acid to clavaminic acid in a reaction requiring fe(2+), alpha-ketoglutarate, and oxygen Registry number: EC 1.14.11.- Synonym: clavaminic acid synthase (26 Jun 1999) |
| cobalamin (5'-phosphate)synthase | <enzyme> From pseudomonas denitrificans; catalyses the synthesis of cobalamin 5'-phosphate from GDP-cobinamide and alpha-ribazole 5'-phosphate, but also the synthesis of cobalamin from GDP-cobinamide and alpha-ribazole Registry number: EC 2.6.99.- Synonym: cobv gene product (26 Jun 1999) |
| phytochromobilin synthase | <enzyme> From plants; reduces biliverdin ixa to phytochromobilin; requires ATP and NADPH Registry number: EC 1.3.1.- (26 Jun 1999) |
| phytoene synthase | <enzyme> Calatyzes the 2-step reaction from geranylgeranyl pyrophosphate to phytoene via prephytoene pyrophophate Registry number: EC 2.5.1.- Synonym: pys gene product, crtb protein, crtb gene product (26 Jun 1999) |
| polyketide synthase | <chemical> A group of enzymes functionally and structurally resembling the fatty acid synthase complex of microorganisms which produce the benzoisochromane quinone moiety of granaticin and other antibiotic; genbank y10438 (fkba) Chemical name: synthetase, polyketide Synonym: 6-deoxyerythronolide b synthase, 6-deoxyerythronolide-b synthase, debs, type II polyketide beta-ketoacyl synthase, griseusin polyketide synthase, type I polyketide synthase, sterigmatocystin polyketide synthase, st polyketide synthase, urdamycin polyketide synthase, polyketide synthase l1, pksl1 gene product, fkba gene product, niddamycin polyketide synthase, pks enzyme (26 Jun 1999) |
| polyketide synthase ketoreductase | <enzyme> A component of the polyketide synthase; mapped by analogy with fatty acid synthetase complex. Registry number: EC 1.1.- Synonym: pks ketoreductase, actiii gene product (26 Jun 1999) |
| myo-inositol-1-phosphate synthase | <enzyme> An enzyme that catalyses the formation of myo-inositol-1-phosphate from glucose-6-phosphate in the presence of NAD. Chemical name: 1L-myo-Inositol-1-phosphate lyase (isomerizing) Registry number: EC 5.5.1.4 (12 Dec 1998) |
| myrcene synthase | <enzyme> Isolated from the grand fir abies grandis. Registry number: EC 5.5.- (26 Jun 1999) |
| porphobilinogen synthase | <enzyme> An enzyme that catalyses the formation of porphobilinogen from two molecules of 5-aminolevulinic acid. Chemical name: 5-Aminolevulinate hydro-lyase (adding 5-aminolevulinate and cyclizing) Registry number: EC 4.2.1.24 (12 Dec 1998) |
| porphobilinogen synthase porphyria | An inherited disorder in which there is a deficiency of porphobilinogen synthase; d-aminolevulinate levels are elevated, leading to neurological disturbances. Synonym: porphobilinogen synthase porphyria. (05 Mar 2000) |
| precorrin-3 synthase | <enzyme> One of enzymes involved in hydrogenobyrinic acid synthesis; methylates c-20 of precorrin-2 to form precorrin-3; 10 aa amino-terminal sequence given in first source Registry number: EC 2.1.1.- Synonym: cbil gene product, precorrin-2 20-methyltransferase (26 Jun 1999) |