Beta-galactosidase
Definition:
EC Tree > 3 Hydrolases > 3.2 Glycosylases > 3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds > 3.2.1.23 beta-galactosidase
Beta-galactosidase is a galactose-releasing exoglycosidase that hydrolyses terminal non-reducing beta-D-galactose residues in beta-D-galactosides; some enzymes also hydrolyse alpha-L-arabinosides, and some animal enzymes also hydrolyse beta-D-fucosides and beta-D-glucosides (cf. lactase EC 3.2.1.108). By cleaving lactose and beta-galactoside glycans it digests dairy lactose and remodels galactose-containing glycoconjugates. It appears in viruses and cellular organisms.
Beta-galactosidase is a galactose-releasing exoglycosidase that hydrolyses terminal non-reducing beta-D-galactose residues in beta-D-galactosides; some enzymes also hydrolyse alpha-L-arabinosides, and some animal enzymes also hydrolyse beta-D-fucosides and beta-D-glucosides (cf. lactase EC 3.2.1.108). By cleaving lactose and beta-galactoside glycans it digests dairy lactose and remodels galactose-containing glycoconjugates. It appears in viruses and cellular organisms.
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