Lactase is an enzyme produced by many organisms. It is located in the brush border of the small intestine of humans and other mammals. It is essential to the complete digestion of whole milk; it breaks down lactose, a sugar which gives milk its sweetness. People who have deficiency of lactase, and consume dairy products, may experience the symptoms of lactose intolerance. Lactase can be purchased as a food supplement, and is added to milk to produce "lactose-free" milk products.
β-Galactosidase, is a glycoside hydrolase enzyme that catalyzes hydrolysis of terminal non-reducing β-D-galactose residues in β-D-galactosides.
Maltase is one type of alpha-glucosidase enzymes located in the brush border of the small intestine. This enzyme catalyzes the hydrolysis of disaccharide maltose into two simple sugars of glucose. Maltase is found in plants, bacteria, yeast, humans, and other vertebrates. It is thought to be synthesized by cells of the mucous membrane lining the intestinal wall.
β-Glucocerebrosidase is an enzyme with glucosylceramidase activity that cleaves by hydrolysis the β-glycosidic linkage of the chemical glucocerebroside, an intermediate in glycolipid metabolism that is abundant in cell membranes. It is localized in the lysosome, where it remains associated with the lysosomal membrane. β-Glucocerebrosidase is 497 amino acids in length and has a molecular mass of 59,700 Da.
β-Glucosidase is an enzyme that catalyses the following reaction:
α-Glucosidase is a glucosidase located in the brush border of the small intestine that acts upon α(1→4) bonds:
Glycoside hydrolases catalyze the hydrolysis of glycosidic bonds in complex sugars. They are extremely common enzymes with roles in nature including degradation of biomass such as cellulose (cellulase), hemicellulose, and starch (amylase), in anti-bacterial defense strategies, in pathogenesis mechanisms and in normal cellular function. Together with glycosyltransferases, glycosidases form the major catalytic machinery for the synthesis and breakage of glycosidic bonds.
Oligo-1,6-glucosidase is a glucosidase enzyme located on the brush border of the small intestine, which catalyses the following reaction:
The enzyme 6-phospho-β-glucosidase (EC 3.2.1.86) catalyzes the following reaction:
The enzyme amygdalin β-glucosidase (EC 3.2.1.117) catalyzes the following chemical reaction:
The enzyme coniferin β-glucosidase (EC 3.2.1.126) catalyzes the following chemical reaction:
In enzymology, a glucosylceramidase (EC 3.2.1.45) is an enzyme that catalyzes the chemical reaction
The enzyme raucaffricine β-glucosidase (EC 3.2.1.125) catalyzes the following chemical reaction:
Glycoside hydrolase family 1 is a family of glycoside hydrolases. Glycoside hydrolases EC 3.2.1. are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycoside hydrolases, based on sequence similarity, has led to the definition of >100 different families. This classification is available on the CAZy web site, and also discussed at CAZypedia, an online encyclopedia of carbohydrate active enzymes.
Maltase-glucoamylase, intestinal is an enzyme that in humans is encoded by the MGAM gene.
Cytosolic beta-glucosidase, also known as cytosolic beta-glucosidase-like protein 1, is a beta-glucosidase enzyme that in humans is encoded by the GBA3 gene.
In molecular biology, glycoside hydrolase family 31 is a family of glycoside hydrolases.
In molecular biology, glycoside hydrolase family 30 is a family of glycoside hydrolases.
Sucrose α-glucosidase is an enzyme with systematic name sucrose-α-D-glucohydrolase. It catalyses the hydrolysis of sucrose and maltose by an α-D-glucosidase-type action.
3α(S)-strictosidine β-glucosidase (EC 3.2.1.105) is an enzyme with systematic name strictosidine β-D-glucohydrolase. It catalyses the following chemical reaction:
