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Galactosidases are enzymes (glycoside hydrolases) that catalyze the hydrolysis of galactosides into monosaccharides.. Galactosides can be classified as either alpha or beta. If the galactoside is classified as an alpha-galactoside, the enzyme is called alpha-galactosidase, and is responsible for catalyzing the hydrolysis of substrates that contain α-galactosidic residues, such as ...
β-Galactosidase (EC 3.2.1.23, beta-gal or β-gal; systematic name β-D-galactoside galactohydrolase) is a glycoside hydrolase enzyme that catalyzes hydrolysis of terminal non-reducing β-D-galactose residues in β-D-galactosides. (This enzyme digests many β-Galactosides, not just lactose.
α-Galactosidase ( EC 3.2.1.22, α-GAL, α-GAL A; systematic name α-D-galactoside galactohydrolase) is a glycoside hydrolase enzyme that catalyses the following reaction: [1] Hydrolysis of terminal, non-reducing α- D -galactose residues in α- D -galactosides, including galactose oligosaccharides, galactomannans and galactolipids
Senescence-associated beta-galactosidase (SA-β-gal or SABG) is a hypothetical hydrolase enzyme that catalyzes the hydrolysis of β-galactosides into monosaccharides. Senescence-associated beta-galactosidase, along with p16 Ink4A , is regarded to be a biomarker of cellular senescence .
Galactosidase alpha is an enzyme that in humans is encoded by the GLA gene. [5] Two recombinant forms of human α-galactosidase are called agalsidase alpha and agalsidase beta (INN). [6] A mold-derived form is the primary ingredient in gas relief supplements. [citation needed]
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.
X-gal is an analog of lactose, and therefore may be hydrolyzed by the β-galactosidase enzyme which cleaves the β-glycosidic bond in D-lactose.X-gal, when cleaved by β-galactosidase, yields galactose and 5-bromo-4-chloro-3-hydroxyindole - 1.
Galactosidase, beta 1, also known as GLB1, is a protein which in humans is encoded by the GLB1 gene. [ 5 ] [ 6 ] The GLB1 protein is a beta-galactosidase that cleaves the terminal beta- galactose from ganglioside substrates and other glycoconjugates. [ 7 ]