A galactoside is a glycoside containing galactose. The H of the OH group on carbon-1 of galactose is replaced by an organic moiety. [1] Structure of ONPG, an example of a β-galactoside. Depending on whether the glycosidic bond lies "above" or "below" the plane of the galactose molecule, galactosides are classified as α-galactosides or β ...

The most common natural galactoside is milk lactose, and the best characterized enzyme for the cleavage of galactose is β-galactosidase (β-d-galactoside galactohydrolase) of E. coli (Wallenfels and Malhotra, 1961). β-Galactosidase catalyzes the cleavage of β-galactosides to β-d-galactose and the corresponding aglycone, which is glucose ...

β-Galactosidase [3.2.1.23] (Escherichia coli) has a special place in both the history and the practice of molecular biology. It played a central role in Jacob and Monod's 1 development of the operon model for the regulation of gene expression.

a monosaccharide sugar of the aldose group, derived from lactose. d -galactose is found in lactose, in cerebrosides of the brain, in the sugar beet, and in many gums and seaweeds; l -galactose is found in flaxseed mucilage. galactose tolerance test a laboratory test done to determine the liver's ability to convert the sugar galactose into glycogen.

Apr 11, 2008 · α-Galactosides, also known as the raffinose family of oligosaccharides (RFO), are low molecular weight non-reducing sugars that are soluble in water and water-alcohol solution (Dey, 1980). They are...

The meaning of GALACTOSIDE is a glycoside that yields galactose on hydrolysis.

Galactosidases are a group of glycosidic enzymes that specifically catalyze the hydrolysis of galactosidic linkages in various oligosaccharides. There are two types of galactosidases: a-galactosidases and β-galactosidases, depending on the configuration of the anomeric carbon atom of the substrate molecule.

Nov 6, 2009 · We report the enzymatic synthesis of galactosyl-ethylene glycol, galactosyl-glycerol, and galactosyl-erythritol by immobilized β-galactosidase from Aspegillus oryzae. The obtained galactosides were isolated and fully characterized by an …

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a monosaccharide sugar of the aldose group, derived from lactose. d -galactose is found in lactose, in cerebrosides of the brain, in the sugar beet, and in many gums and seaweeds; l -galactose is found in flaxseed mucilage. galactose tolerance test a laboratory test done to determine the liver's ability to convert the sugar galactose into glycogen.