α-Glucosidase / Transglucosidase
|Name||α-Glucosidase / Transglucosidase|
|EC Number||EC 188.8.131.52|
This enzyme is an α-glucosidase, and is capable of hydrolyzing its substrate from the non-reducing end of the molecule to release glucose molecules. Also, under high substrate concentration, this enzyme is capable of performing a glycosyl transfer reaction rather than the hydrolysis of the substrate. Because of this glycosyl transfer capability, this enzyme is also referred as transglucosidase.
Transglucosidases can be divided broadly into an α-1,6-, α-1,4-, α-1,2- and α-1,3-glycosyl transferase type.
Isomaltooligosaccharide can be produced by transglucosidase of Aspergillus niger origin using maltose as the starting material, while maltose can be prepared by breaking down starch with α-amylase and β-amylase. Isomaltooligosaccharides, as represented by isomaltose and panose, are characterized by their mellow sweetness and high capacity for retaining moisture. They are considered effective in promoting the growth of beneficial intestinal bacteria.
α-Glucosidase can be found in a wide range of microorganisms, plants and animal tissues. Representative microorganisms that carry this enzyme include Aspergillus niger and Acremonium sp.
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