| anhydrous | <chemistry> A substance deprived or destitute of water. (12 Nov 1997) |
|---|---|
| anhydrous alcohol | Water having been removed. Synonym: anhydrous alcohol. (05 Mar 2000) |
| anhydrous chloral | CCl3-CHO; trichloroacetaldehyde;a thin oily liquid with a pungent odour, formed by the action of chlorine gas on alcohol. Synonym: anhydrous chloral. (05 Mar 2000) |
| anhydrous lanolin | Lanolin that contains not more than 0.25% of water; used as a water-adsorbable ointment base. (05 Mar 2000) |
| alpha-hydroxyethylthiamin pyrophosphate | The activated form of acetaldehyde that is formed during the decarboxylation of active pyruvate. Formed in alcohol fermentation and in carbohydrate metabolism. Synonym: a-hydroxyethylthiamin pyrophosphate. (05 Mar 2000) |
| alpha-lactyl-thiamin pyrophosphate | An intermediate formed in the oxidative decarboxylation of pyruvate. Compare: pyruvate dehydrogenase (lipoamide). Synonym: alpha-lactyl-thiamin pyrophosphate. (05 Mar 2000) |
| aneurine 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) |
| calcium pyrophosphate | <chemical> Diphosphoric acid, calcium salt. An inorganic pyrophosphate which affects calcium metabolism in mammals. Abnormalities in its metabolism occur in some human diseases, notably hypophosphatasia and pseudogout. Chemical name: Diphosphoric acid, calcium salt (12 Dec 1998) |
| calcium pyrophosphate deposition disease | <radiology> Manifestations can occur singly or in any combination, pseudogout, acute crystal-induced synovitis with clinical symptoms analogous to gout, arthropathy, beaklike osteophytes of 2nd, 3rd metacarpal heads, subchondral cysts (especially carpal bones), unusual distribution of disease (radiocarpal/ulnar joint, patellofemoral joint), SLAC - scapholunate advanced collapse, chondrocalcinosis, triangular fibrocartilage, symphysis pubis, menisci of knee, annulus fibrosus of intervertebral disk (12 Dec 1998) |
| geranylgeranyl pyrophosphate | A key intermediate in the biosynthesis of many terpenes. (05 Mar 2000) |
| geranyl pyrophosphate | A key intermediate in the biosynthesis of sterols, dolichols, ubiquinone, and prenylated proteins. (05 Mar 2000) |
| geranyl pyrophosphate-sabinene hydrate cyclase | <enzyme> Enzyme from sweet marjoram; catalyses cation-dependent cyclization of geranyl pyrophosphate to cis and trans sabinene hydrate, deriving oh from water, not from the pyrophosphate ester Registry number: EC 5.5.- Synonym: sabinene hydrate cyclase, sabinene hydrate synthase (26 Jun 1999) |
| phosphoribosyl pyrophosphate | <chemical> The key substance in the biosynthesis of histidine, tryptophan, and purine and pyrimidine nucleotides. Chemical name: alpha-D-Ribofuranose, 5-(dihydrogen phosphate) 1-(trihydrogen diphosphate) (12 Dec 1998) |
| prelycopersene pyrophosphate synthetase | <chemical> Synonym: prephytoene pyrophosphate synthetase, prephytoene synthase (26 Jun 1999) |
| prephytoene pyrophosphate dehydrogenase | <enzyme> Encoded by gene crte; reaction product of above enzyme is a phytoene; gene found in the cyanella (plastid) DNA of an eukaryotic alga, cyanophora paradoxa; amino acid sequence given in first source Registry number: EC 1.- Synonym: ppp-dehydrogenase, crte gene product, geranylgeranyl pyrophosphate synthase, geranylgeranyl-pyrophosphate synthase, albino-3 gene product (26 Jun 1999) |