| decaprenyl pyrophosphate synthetase | <enzyme> Forms all-trans-decaprenyl pyrophosphate from isopentenyl pyrophosphate and either farnesyl pyrophosphate or geranylgeranyl pyrophosphate; does not transfer dimethylallyl or geranyl groups Registry number: EC 2.5.1.- Synonym: dp-pp-synthetase (26 Jun 1999) |
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| diacylglycerol pyrophosphate phosphatase | <enzyme> Catalyses the dephosphorylation of the beta phosphate of diacylglycerol pyrophosphate (dgpp) to produce phosphatidate and p(i) Registry number: EC 3.6.1.- Synonym: dgpp phosphatase (26 Jun 1999) |
| octaprenyl pyrophosphate synthetase | <enzyme> E. Coli enzyme catalyses the condensation of isopentenyl pyrophosphate with farnesyl pyrophosphate to yield octaprenyl pyrophosphate Registry number: EC 2.5.1.- Synonym: octaprenyl diphosphate synthase (26 Jun 1999) |
| technetium tc 99m pyrophosphate | <chemical> A radionuclide imaging agent used primarily in scintigraphy or tomography of the heart to evaluate the extent of the necrotic myocardial process. It has also been used in noninvasive tests for the distribution of organ involvement in different types of amyloidosis and for the evaluation of muscle necrosis in the extremities. Pharmacological action: radiopharmaceuticals, (12 Dec 1998) |
| terpenyl pyrophosphate hydrolase | <enzyme> Hydrolyzes bornyl pyrophosphate to bornyl phosphate Registry number: EC 3.6.1.- (26 Jun 1999) |
| tetraethyl pyrophosphate | Et4P2O7; [(EtO)2PO]2O;an organic phosphoric compound used as an insecticide; a potent irreversible cholinesterase inhibitor. Acronym: TEPP (05 Mar 2000) |
| thiamine pyrophosphate | <biochemistry> Co carboxylase. A cofactor that has an unusually acidic carbon atom able to form carbon carbon bonds. Found in pyruvate dehydrogenase and transketolase. (18 Nov 1997) |
| thiamin pyrophosphate | The diphosphoric ester of thiamin, a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases. Synonym: aneurine pyrophosphate, cocarboxylase, diphosphothiamin. (05 Mar 2000) |
| farnesyl pyrophosphate | The pyrophosphoryl derivative of farnesol; a key intermediate in the synthesis of steroids, dolichol, ubiquinone, prenylated proteins, and haem a. (05 Mar 2000) |
| uridine 5'-(alpha-D-galactopyranosyl pyrophosphate) NAD 2-hexosyl oxidoreductase | <enzyme> Converts udpgalactose (pyranose form) to 2-keto-galactose which rearranges to furanose form Chemical name: UDPgalactose nad 2-hexosyl oxidoreductase Registry number: EC 1.1.1.- (26 Jun 1999) |
| 5-phospho-alpha-d-ribosyl 1-pyrophosphate | 5-Phosphoribosyl 1-diphosphate;d-Ribose carrying a phosphate group on ribose carbon-5 and a pyrophosphate group on ribose carbon-1; an intermediate in the formation of the pyrimidine and purine nucleotides as well as NAD+. Synonym: 5-phosphoribose 1-diphosphate. Acronym: PRPP (05 Mar 2000) |
| 99mTc pyrophosphate | A radionuclide tracer used for imaging ischemic myocardium in nuclear medicine. See: technetium-99m. (05 Mar 2000) |
| lipothiamide pyrophosphate | Name once given to the coenzymes of the multi-enzyme complex catalyzing the formation of acetyl-CoA from pyruvate and involving lipoamide and thiamin pyrophosphate, on the assumption that they were a single compound. See: lipoic acid. (05 Mar 2000) |
| benzoylpas calcium | 4-Benzamidosalicylic acid calcium salt;an antituberculous agent. (05 Mar 2000) |
| calcium | <element> An element taken in through the diet that is essential for a variety of bodily functions, such as neurotransmission, muscle contraction and proper heart function. Imbalances of calcium can lead to many health problems and excess calcium in nerve cells can cause their death. (22 May 1997) |