| 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) |
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| 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) |
| cystathionine beta-synthase | <enzyme> A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyses the reaction of homocysteine with serine to form cystathionine with the elimination of water. Chemical name: L-Serine hydro-lyase (adding homocysteine) Registry number: EC 4.2.1.22 (12 Dec 1998) |
| cystathionine gamma-synthase | o-succinylhomoserine (thiol)-lyase |
| cysteine synthase | <enzyme> An enzyme that catalyses the biosynthesis of cysteine in microorganisms and plants from o-acetyl-l-serine and hydrogen sulfide. Chemical name: O(3)-Acetyl-L-serine acetate-lyase (adding hydrogen sulfide) Registry number: EC 4.2.99.8 (12 Dec 1998) |
| pristinamycin IIA synthase | <enzyme> A heterodimer of snaa and snab proteins (snaa and snab gene products, respectively); catalyses the oxidation of piib to piia with fmnh2 and o2 as cofactors; from streptomyces pristinaespiralis. Registry number: EC 1.3.99.- Synonym: pii(a) synthase, piia synthase (26 Jun 1999) |
| prostaglandin endoperoxide synthase | <enzyme> An enzyme complex that catalyses the formation of prostaglandins from the appropriate unsaturated fatty acid, molecular oxygen, and a reduced acceptor. See: cyclooxygenase Chemical name: (5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenoate,hydrogen-donor:oxygen oxidoreductase Registry number: EC 1.14.99.1 (12 Dec 1998) |
| prostaglandin-E synthase | <enzyme> Converts pgh to pge; part of prostaglandin synthase complex Registry number: EC 5.3.99.3 Synonym: prostaglandin r2 e-isomerase, endoperoxide isomerase, prostaglandin endoperoxide e isomerase, prostaglandin h2 e-isomerase, pge2 isomerase, prostaglandin e2 isomerase, pgr2 e-isomerase, prostaglandin h2-prostaglandin e2 isomerase, prostaglandin e isomerase (26 Jun 1999) |
| prostaglandin-F synthase | <enzyme> Catalyses conversion of pgd2 to pgf2alpha; also converts pgh2 to pgf2alpha Registry number: EC 1.1.1.188 Synonym: pgd2 11-keto reductase, pgf synthetase, pgf synthase, prostaglandin d2-NADPH-dependent ketoreductase, prostaglandin f synthetase, pgf2alpha synthase, prostaglandin d2 11-keto reductase (26 Jun 1999) |
| pseudouridine 746-32 synthase | <enzyme> A dual-specificity pseudouridine synthase; forms both pseudouridine 746 in e. Coli 23s ribosomal RNA and pseudouridine 32 in trna(phe); has 219 aa; mw 24 kD Registry number: EC 5.4.99.- Synonym: 23s RNA pseudouridine 746 synthase, psi746 synthase, trna(phe) pseudouridine 32 synthase, psi32 synthase (26 Jun 1999) |
| psoralen synthase | <enzyme> Nadph-dependent cytochrome p-450 monooxygenase which converts (+) marmesin by initial hydroxylation at c3', followed by release of water, acetone and psoralen Registry number: EC 1.14.13.- Synonym: psoralen 5-monooxygenase (26 Jun 1999) |
| pteroylpolyglutamate synthase | <enzyme> Catalyses formation of amide bond between the gamma-carboxyl group of a folate and the amino group of glutamic acid Registry number: EC 6.3.1.- (26 Jun 1999) |