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ENZYME entry: EC 3.2.1.20

Accepted Name
alpha-glucosidase
Alternative Name(s)
acid maltase
glucoinvertase
glucosidosucrase
lysosomal alpha-glucosidase
maltase
maltase-glucoamylase
Reaction catalysed
Hydrolysis of terminal, non-reducing (1->4)-linked alpha-D-glucose residues with release of alpha-D-glucose
Comment(s)
  • Group of enzymes whose specificity is directed mainly toward the exohydrolysis of 1,4-alpha-glucosidic linkages, and that hydrolyze oligosaccharides rapidly, relative to polysaccharides, which are hydrolyzed relatively slowly, or not at all.
  • The intestinal enzyme also hydrolyzes polysaccharides, catalyzing the reactions of EC 3.2.1.3, and, more slowly, hydrolyzes 1,6-alpha-D- glucose links.
Cross-references
BRENDA3.2.1.20
EC2PDB3.2.1.20
ExplorEnz3.2.1.20
PRIAM enzyme-specific profiles3.2.1.20
KEGG Ligand Database for Enzyme Nomenclature3.2.1.20
IUBMB Enzyme Nomenclature3.2.1.20
IntEnz3.2.1.20
MEDLINEFind literature relating to 3.2.1.20
MetaCyc3.2.1.20
Rhea expert-curated reactions3.2.1.20
UniProtKB/Swiss-Prot
D4B0X3, AGD1_ARTBCA1CNK4, AGDC_ASPCLB0XNL6, AGDC_ASPFC
B8MZ41, AGDC_ASPFNQ4WRH9, AGDC_ASPFUQ2UQV7, AGDC_ASPOR
Q0CMA7, AGDC_ASPTNQ5AWI5, AGDC_EMENIA1D1E6, AGDC_NEOFI
Q9F234, AGL2_BACTQQ9Z3R8, AGLA_RHIMEO33830, AGLA_THEMA
O86960, AGLA_THENEP56526, AGLU_ASPNGQ12558, AGLU_ASPOR
O04931, AGLU_BETVUP29064, AGLU_CANTSQ43763, AGLU_HORVU
Q92442, AGLU_MUCJAQ653V7, AGLU_ORYSJP0CD66, AGLU_SACS2
D0KQM8, AGLU_SACS9Q9C0Y4, AGLU_SCHPOO04893, AGLU_SPIOL
O00906, AGLU_TETPYP43473, AGL_PEDPEQ8TET4, GANC_HUMAN
Q9BE70, GANC_MACFAQ8BVW0, GANC_MOUSEQ9MYM4, LYAG_BOVIN
P10253, LYAG_HUMANP70699, LYAG_MOUSEQ5R7A9, LYAG_PONAB
Q6P7A9, LYAG_RATP53341, MAL12_YEASTQ17058, MAL1_APIME
P07190, MAL1_DROMEO16098, MAL1_DROVIP07191, MAL2_DROME
O16099, MAL2_DROVIP38158, MAL32_YEASTP07192, MAL3_DROME
P07265, MAL62_YEASXP13080, MALT_AEDAEP80072, MALT_BACTQ
Q02751, MALT_CANAXQ95WY5, MALT_CULPIQ9P6J3, MALT_SCHPO
P21517, MALZ_ECOLIO43451, MGA_HUMANQ9AI65, PALH_ERWRD

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.2.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.2.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.-.-.-