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Qu'est-ce (qui) est ergosterol - définition
NADA
Provitamin D2; Ergosterin
ergosterol
[?:'g?st?r?l]
¦ noun a compound present in many fungi which is converted to vitamin D2 when irradiated with ultraviolet light.
Origin
early 20th cent.: from ergot, on the pattern of cholesterol.
5alpha-hydroxysteroid dehydratase
CLASS OF ENZYMES
5a-hydroxysteroid dehydratase; EC 4.2.1.62; 5alpha-ergosta-7,22-diene-3beta,5-diol 5,6-hydro-lyase (ergosterol-forming)
In enzymology, a 5alpha-hydroxysteroid dehydratase () is an enzyme that catalyzes the chemical reaction
ergocalciferol
CHEMICAL COMPOUND
Vitamin D2; Viosterol; Drisdol; Vitamin D-2; Deltalin; Ergocalciferols; Calcidol; ATC code A11CC01; ATCvet code QA11CC01; Buco-D; Calciferon 2; Condacaps; Condocaps; Condol; Crtron; Crystallina; D-Arthin; D-Tracetten; Daral; Davitamon D; Davitin; De-Rat Concentrate; Decaps; Dee-Osterol; Dee-Ron; Dee-Ronal; Dee-Roual; Deratol; Detalup; Diactol; Divit Urto; Ercalciol; Ergorone; Ergosterol Activated; Ergosterol, Irradiated; Ertron; Fortodyl; Geltabs; Hi-Deratol; Infron; Metadee; Mulsiferol; Mykostin; Novovitamin-D; Oleovitamin D; Oleovitamin D, Synthetic; Oleovitamin D2; Ostelin; Radiostol; Radstein; Radsterin; Rodine C; Shock-Ferol; Shock-Ferol Sterogyl; Sterogyl; Uvesterol-D; Vio-D; Viostdrol; Viosterol in Oil; Vitavel-D; Rayaldee; Ergocal
[??:g?(?)kal's?f?r?l]
¦ noun Biochemistry another term for calciferol (vitamin D2).
Origin
1950s: blend of ergot and calciferol.
Wikipédia
Ergosterol
Ergosterol (ergosta-5,7,22-trien-3β-ol) is a sterol found in cell membranes of fungi and protozoa, serving many of the same functions that cholesterol serves in animal cells. Because many fungi and protozoa cannot survive without ergosterol, the enzymes that synthesize it have become important targets for drug discovery. In human nutrition, ergosterol is a provitamin form of vitamin D2; exposure to ultraviolet (UV) light causes a chemical reaction that produces vitamin D2.
