Glycosyl hydrolases family 31. Glycosyl hydrolases are key enzymes of carbohydrate metabolism. Family 31 comprises of enzymes that are, or similar to, alpha- galactosidases.

Alpha-glucosidase II-like. Alpha-glucosidase II (alpha-D-glucoside glucohydrolase) is a glycosyl hydrolase family 31 (GH31) enzyme, found in bacteria and plants, which has exo-alpha-1,4-glucosidase and oligo-1,6-glucosidase activities. Alpha-glucosidase II has been characterized in Bacillus thermoamyloliquefaciens where it forms a homohexamer. This subgroup also includes the MalA alpha-glucosidase from Sulfolobus solfataricus and the AglA alpha-glucosidase from Picrophilus torridus. MalA is part of the carbohydrate-metabolizing machinery that allows this organism to utilize carbohydrates, such as maltose, as the sole carbon and energy source.

Alpha-glucosidase, glycosyl hydrolase family GH31 [Carbohydrate transport and metabolism].

neutral alpha-glucosidase C, neutral alpha-glucosidase AB. This subgroup includes the closely related glycosyl hydrolase family 31 (GH31) isozymes, neutral alpha-glucosidase C (GANC) and the alpha subunit of heterodimeric neutral alpha-glucosidase AB (GANAB). Initially distinguished on the basis of differences in electrophoretic mobility in starch gel, GANC and GANAB have been shown to have other differences, including those of substrate specificity. GANC and GANAB are key enzymes in glycogen metabolism that hydrolyze terminal, non-reducing 1,4-linked alpha-D-glucose residues from glycogen in the endoplasmic reticulum. The GANC/GANAB family includes the alpha-glucosidase II (ModA) from Dictyostelium discoideum as well as the alpha-glucosidase II (GLS2, or ROT2 - Reversal of TOR2 lethality protein 2) from Saccharomyces cerevisiae.

maltase-glucoamylase, sucrase-isomaltase, lysosomal acid alpha-glucosidase. This subgroup includes the following three closely related glycosyl hydrolase family 31 (GH31) enzymes: maltase-glucoamylase (MGAM), sucrase-isomaltase (SI), and lysosomal acid alpha-glucosidase (GAA), also known as acid-maltase. MGAM is one of the two enzymes responsible for catalyzing the last glucose-releasing step in starch digestion. SI is implicated in the digestion of dietary starch and major disaccharides such as sucrose and isomaltose, while GAA degrades glycogen in the lysosome, cleaving both alpha-1,4 and alpha-1,6 glucosidic linkages. MGAM and SI are anchored to small-intestinal brush-border epithelial cells. The absence of SI from the brush border membrane or its malfunction is associated with malabsorption disorders such as congenital sucrase-isomaltase deficiency (CSID). The domain architectures of MGAM and SI include two tandem GH31 catalytic domains, an N-terminal domain found near the membrane-bound end, and a C-terminal luminal domain. Both of the tandem GH31 domains of MGAM and SI are included in this family. The domain architecture of GAA includes an N-terminal TFF (trefoil factor family) domain in addition to the GH31 catalytic domain. Deficient GAA expression causes Pompe disease, an autosomal recessive genetic disorder also known as glycogen storage disease type II (GSDII).

ChainA, Glycosyl hydrolase, family 31 [Blautia obeum ATCC 29174],6C9X_B Chain B, Glycosyl hydrolase, family 31 [Blautia obeum ATCC 29174]

ChainA, Glycosyl hydrolase, family 31 [Blautia obeum ATCC 29174],6CA1_B Chain B, Glycosyl hydrolase, family 31 [Blautia obeum ATCC 29174]

ChainA, Uncharacterized protein [Blautia obeum ATCC 29174],3M46_B Chain B, Uncharacterized protein [Blautia obeum ATCC 29174]

ChainA, Uncharacterized protein [Blautia obeum ATCC 29174],3M6D_B Chain B, Uncharacterized protein [Blautia obeum ATCC 29174],3MKK_A Chain A, alpha-glucosidase GH31 family [Blautia obeum ATCC 29174],3MKK_B Chain B, alpha-glucosidase GH31 family [Blautia obeum ATCC 29174],3POC_A The crystal structure of the D307A mutant of alpha-Glucosidase (FAMILY 31) from Ruminococcus obeum ATCC 29174 in complex with acarbose [Blautia obeum ATCC 29174],3POC_B The crystal structure of the D307A mutant of alpha-Glucosidase (FAMILY 31) from Ruminococcus obeum ATCC 29174 in complex with acarbose [Blautia obeum ATCC 29174]

ChainA, alpha-glucosidase [Blautia obeum ATCC 29174],3NSX_B Chain B, alpha-glucosidase [Blautia obeum ATCC 29174]

Alpha-glucosidase 2 OS=Bacillus thermoamyloliquefaciens OX=1425 PE=3 SV=1

Neutral alpha-glucosidase C OS=Homo sapiens OX=9606 GN=GANC PE=2 SV=3

Neutral alpha-glucosidase C (Fragment) OS=Macaca fascicularis OX=9541 GN=GANC PE=2 SV=2

Neutral alpha-glucosidase C OS=Mus musculus OX=10090 GN=Ganc PE=1 SV=2

Probable glucan 1,3-alpha-glucosidase OS=Oryza sativa subsp. japonica OX=39947 GN=Os03g0216600 PE=3 SV=1