Entrez Summary: This gene encodes a sucrase-isomaltase enzyme that is expressed in the intestinal brush border. The encoded protein is synthesized as a precursor protein that is cleaved by pancreatic proteases into two enzymatic subunits sucrase and isomaltase. These two subunits heterodimerize to form the sucrose-isomaltase complex. This complex is essential for the digestion of dietary carbohydrates including starch, sucrose and isomaltose. Mutations in this gene are the cause of congenital sucrase-isomaltase deficiency.[provided by RefSeq, Apr 2010].
UniProt Summary: Plays an important role in the final stage of carbohydrate digestion. Isomaltase activity is specific for both alpha-1,4- and alpha-1,6-oligosaccharides. {ECO:0000269|PubMed:20356844}.
Pfam DomainsGO Terms
Pfam Domains
Trefoil
Glyco hydro 31
GO Terms
oligo-1,6-glucosidase activity
sucrose alpha-glucosidase activity
polysaccharide digestion
brush border
digestion
carbohydrate binding
apical plasma membrane
carbohydrate metabolic process
Golgi apparatus
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)