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Invertase is a glycoprotein that hydrolyses (cleaves) the non-reducing terminal β-fructofuranoside residues. Invertases cleave the O-C(fructose) bond, whereas the sucrases cleave the O-C(glucose) bond. [3] Invertase cleaves the α-1,2-glycosidic bond of sucrose. For industrial use, invertase is usually derived from yeast.
The enzyme invertase, which occurs more commonly in plants, fungi and bacteria, also hydrolyzes sucrose (and other fructosides) but by a different mechanism: it is a fructosidase, whereas sucrase is a glucosidase. [2]
These enzymes have a variety of uses including degradation of plant materials (e.g., cellulases for degrading cellulose to glucose, which can be used for ethanol production), in the food industry (invertase for manufacture of invert sugar, amylase for production of maltodextrins), and in the paper and pulp industry (xylanases for removing ...
In bacteria and some animals, sucrose is digested by the enzyme invertase. Sucrose is an easily assimilated macronutrient that provides a quick source of energy, provoking a rapid rise in blood glucose upon ingestion. Sucrose, as a pure carbohydrate, has an energy content of 3.94 kilocalories per gram (or 17 kilojoules per gram).
The best-known disaccharide is sucrose (table sugar). Hydrolysis of sucrose yields glucose and fructose. Invertase is a sucrase used industrially for the hydrolysis of sucrose to so-called invert sugar. Lactase is essential for digestive hydrolysis of lactose in milk; many adult humans do not produce lactase and cannot digest the lactose in milk.
The glycosyl hydrolase 68 family includes several bacterial levansucrase enzymes, and invertase from Zymomonas. Levansucrase ( EC 2.4.1.10 ), also known as beta-D-fructofuranosyl transferase, catalyses the conversion of sucrose and (2,6-beta-D-fructosyl)(N) to glucose and (2,6-beta-D-fructosyl)(N+1), where other sugars can also act as fructosyl ...
The human sucrase-isomaltase is a dual-function enzyme with two GH31 domains, one serving as the isomaltase, the other serving as a sucrose α-glucosidase. References [ edit ]
69983 Ensembl ENSG00000090402 ENSMUSG00000027790 UniProt P14410 F8VQM5 RefSeq (mRNA) NM_001041 NM_001081137 RefSeq (protein) NP_001032 NP_001074606 Location (UCSC) Chr 3: 164.98 – 165.08 Mb Chr 3: 72.8 – 72.88 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Sucrase-isomaltase is a bifunctional glucosidase (sugar-digesting enzyme) located on the brush border of the small intestine ...