Galactoside

Galactoside

A galactoside is a glycoside containing galactose. The H of the OH group on carbon-1 of galactose is replaced by an organic moiety.

Depending on whether the glycosidic bond lies "above" or "below" the plane of the galactose molecule, galactosides are classified as α-galactosides or β-galactosides.

Types

v · Glycosides
Bond
Geometry
Glycone
Glucoside · Fructoside · Glucuronide · Riboside
Aglycone
biochemical families: prot · nucl · carb (glpr, alco, glys) · lipd (fata/i, phld, strd, gllp, eico) · amac/i · ncbs/i · ttpy/i

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  • galactoside — [galaktozid] n. f. ÉTYM. Mil. XXe; de galact , et oside. ❖ ♦ Chim. Composé dans lequel une molécule de galactose est liée à un alcool ou un autre ose. || Le lactose est un galactoside. 0 Ce système (dit « système Lactose ») gouverne la synthèse… …   Encyclopédie Universelle

  • galactoside — [gə lak′tə sīd΄] n. 〚 GALACTOS(E) + IDE〛 any glycoside which contains galactose * * * ga·lac·to·side (gə lăkʹtə sīd ) n. Any of a group of glycosides that yield galactose on hydrolysis. * * * …   Universalium

  • galactoside — [gə lak′tə sīd΄] n. [ GALACTOS(E) + IDE] any glycoside which contains galactose …   English World dictionary

  • Galactoside — Un galactoside est un hétéroside ayant pour ose le galactose. Selon le cas où la liaison osidique est au dessous ou au dessus du plan de la molécule de galactose, les galactosides sont classés en deux familles, les α galactosides et les β… …   Wikipédia en Français

  • galactoside — gəˈlaktəˌsīd, sə̇d noun ( s) Etymology: galactose + ide : a glycoside that yields galactose on hydrolysis methol galactoside …   Useful english dictionary

  • Galactoside O-acetyltransferase — Galactoside O acetyltransferase, or Thiogalactoside transacetylase, (EC number|2.3.1.18) is an enzyme, which is a product of the lacA gene in E. coli .Catalyzed reaction:acetyl CoA + beta D galactoside → CoA + 6 acetyl beta D galactosideee alsoβ… …   Wikipedia

  • Galactoside 2-alpha-L-fucosyltransferase — In enzymology, a galactoside 2 alpha L fucosyltransferase (EC number|2.4.1.69) is an enzyme that catalyzes the chemical reaction:GDP beta L fucose + beta D galactosyl R ightleftharpoons GDP + alpha L fucosyl 1,2 beta D galactosyl RThus, the two… …   Wikipedia

  • galactoside — noun Date: 1862 a glycoside that yields galactose on hydrolysis …   New Collegiate Dictionary

  • galactoside — noun Any of several glycosides containing galactose …   Wiktionary

  • galactoside — A compound in which the H of the OH group on carbon 1 of galactose is replaced by an organic moiety. * * * ga·lac·to·side gə lak tə .sīd n a glycoside that yields galactose on hydrolysis * * * ga·lac·to·side (gə lakґto sīd) a glycoside… …   Medical dictionary

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