Maltase
(EC
3.2.1.20,
alpha-glucosidase,
glucoinvertase,
glucosidosucrase,
maltase-glucoamylase,
alpha-glucopyranosidase,
glucosidoinvertase,
alpha-D-glucosidase,
alpha-glucoside hydrolase,
alpha-1,4-glucosidase,
alpha-D-glucoside glucohydrolase) 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.
(EC
3.2.1.20,
,
) 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.
Digestion of starch requires six intestinal enzymes. Two of these enzymes are luminal endo-glucosidases named alpha-amylases. The other four enzymes have been identified as different maltases, exo-glucosidases bound to the luminal surface of enterocytes. Two of these maltase activities were associated with
sucrase-isomaltase
(maltase Ib, maltase Ia). The other two maltases with no distinguishing characteristics were named
maltase-glucoamylase
(maltases II and III). The activities of these four maltases are also described as alpha-glucosidase because they all digest linear starch oligosaccharides to glucose.
In most cases, it is equivalent to
alpha-glucosidase, but the term "maltase" emphasizes the disaccharide nature of the substrate from which glucose is cleaved, and "alpha-glucosidase" emphasizes the bond, whether the substrate is a disaccharide or
polysaccharide.[citation needed]
Vampire bats
are the only vertebrates known to not exhibit intestinal maltase activity.
Product Parameters
Technical Data Sheet

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