sucrose alpha-glucosidase activity

Definition

Target type: molecularfunction

Catalysis of the reaction: sucrose + H2O = alpha-D-glucose + beta-D-fructose. [EC:3.2.1.48, MetaCyc:RXN-1461]

Sucrose alpha-glucosidase activity is a catalytic function that involves the hydrolysis of sucrose, a disaccharide composed of glucose and fructose, into its constituent monosaccharides. Specifically, this enzyme cleaves the alpha-1,2-glycosidic bond between the glucose and fructose moieties of sucrose. This process releases free glucose and fructose molecules, which can be further metabolized by the organism. The mechanism typically involves the following steps: 1) Binding of sucrose to the active site of the enzyme. 2) Protonation of the glycosidic bond by a catalytic residue, such as an aspartic acid or glutamic acid. 3) Cleavage of the glycosidic bond, leading to the formation of glucose and fructose. 4) Release of the products from the enzyme. This activity plays a critical role in various metabolic pathways, particularly in carbohydrate digestion and energy metabolism. In organisms, this activity is often associated with the breakdown of dietary sucrose in the intestinal tract, providing a source of glucose for cellular respiration. It can also be involved in the synthesis of other carbohydrates, such as oligosaccharides and polysaccharides.'
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Proteins (2)

Compounds (30)