| galactosidase | <enzyme> One of a class of enzymes which cuts the glycosidic bond between the sugar galactose and another sugar molecule (of a different type than galactose). There are two subclasses - the alpha galactosidases and beta galactosidases - which cuts the two types of glycosidic bonds (alpha and beta, respectively). (09 Oct 1997) |
|---|---|
| galactosidases | <enzyme> A family of galactoside hydrolases that hydrolyze compounds with an o-galactosyl linkage. Registry number: EC 3.2.1.- (12 Dec 1998) |
| alpha-d-galactosidase | <enzyme> An enzyme catalyzing the hydrolysis of alpha-d-galactosides to release free d-galactose. A deficiency of type A alpha-d-galactosidase is associated with Fabry's disease. Synonym: melibiase. (05 Mar 2000) |
|---|---|
| alpha-galactosidase | <enzyme> An enzyme that catalyses the hydrolysis of terminal, non-reducing alpha-d-galactose residues in alpha-galactosides including galactose oligosaccharides, galactomannans, and galactolipids. Chemical name: alpha-D-Galactoside galactohydrolase Registry number: EC 3.2.1.22 (12 Dec 1998) |
| beta-d-galactosidase | A sugar-splitting enzyme that catalyses the hydrolysis of lactose into d-glucose and d-galactose, and that of other beta-d-galactosides; it also catalyses galactotransferase reactions; a deficiency of beta-d -galactosidase leads to problems in the intestinal digestion of lactose; used in the production of milk products for adults who do not have the intestinal enzyme; a defect of one isozyme of beta-d-galactosidase is associated with Morquio's syndrome type B. Compare: lactase persistence, lactase restriction. Synonym: lactase. (05 Mar 2000) |
| beta-galactosidase | <enzyme> A group of enzymes that catalyses the hydrolysis of terminal, non-reducing beta-d-galactose residues in beta-galactosides. Chemical name: beta-D-Galactoside galactohydrolase Registry number: EC 3.2.1.23 (12 Dec 1998) |
| b galactosidase | <enzyme> An enzyme that hydrolyzes the beta galactoside linkage in lactose-producing glucose and galactose; also hydrolyzes the chromogenic substrate IPTG (isopropylthiogalactoside) and thus is used as an indicator of fused genes and gene expression. (05 Mar 2000) |
| keratan-sulfate endo-1,4-beta-galactosidase | <enzyme> Do not confuse with EC 3.2.1.102 blood-group substance endo-1,4-beta-galactosidase which is also called in enzyme nomenclature endo-beta-galactosidase Registry number: EC 3.2.1.103 Synonym: keratanase, endo-beta-galactosidase (26 Jun 1999) |
| 4-methylumbelliferyl alpha-galactosidase | <enzyme> Aspect of EC 3.2.1.22, alpha-galactosidase Registry number: EC 3.2.1.- (26 Jun 1999) |
| 4-methylumbelliferyl-beta-galactosidase | <enzyme> Non-specific brain enzyme; distinct from EC 3.2.1.46 Registry number: EC 3.2.1.- Synonym: 4-mub-galactosidase (26 Jun 1999) |