3TOP | pdb_00003top

Crystral Structure of the C-terminal Subunit of Human Maltase-Glucoamylase in Complex with Acarbose

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Glyco_hydro_31_C	e3topB2	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: Glycosyl hydrolase domain (From Topology)	T: Glycosyl hydrolase domain	F: Glyco_hydro_31_C	ECOD (1.6)
B	Gal_mutarotas_2	e3topB3	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: supersandwich (From Topology)	T: supersandwich	F: Gal_mutarotas_2	ECOD (1.6)
B	DUF5110_1	e3topB4	A: beta sandwiches	X: Putative glucosidase YicI, C-terminal domain (From Topology)	H: Putative glucosidase YicI, C-terminal domain (From Topology)	T: Putative glucosidase YicI, C-terminal domain	F: DUF5110_1	ECOD (1.6)
B	Glyco_hydro_31_N	e3topB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_31_N	ECOD (1.6)
A	Glyco_hydro_31_C	e3topA2	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: Glycosyl hydrolase domain (From Topology)	T: Glycosyl hydrolase domain	F: Glyco_hydro_31_C	ECOD (1.6)
A	Gal_mutarotas_2	e3topA3	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: supersandwich (From Topology)	T: supersandwich	F: Gal_mutarotas_2	ECOD (1.6)
A	DUF5110_1	e3topA4	A: beta sandwiches	X: Putative glucosidase YicI, C-terminal domain (From Topology)	H: Putative glucosidase YicI, C-terminal domain (From Topology)	T: Putative glucosidase YicI, C-terminal domain	F: DUF5110_1	ECOD (1.6)
A	Glyco_hydro_31_N	e3topA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_31_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	4.10.110.10	Few Secondary Structures	Irregular	Spasmolytic Protein	domain 1	CATH (4.3.0)
B	2.60.40.1760	Mainly Beta	Sandwich	Immunoglobulin-like	glycosyl hydrolase (family 31)	CATH (4.3.0)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
B	2.60.40.1180	Mainly Beta	Sandwich	Immunoglobulin-like	Golgi alpha-mannosidase II	CATH (4.3.0)
A	4.10.110.10	Few Secondary Structures	Irregular	Spasmolytic Protein	domain 1	CATH (4.3.0)
A	2.60.40.1760	Mainly Beta	Sandwich	Immunoglobulin-like	glycosyl hydrolase (family 31)	CATH (4.3.0)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	2.60.40.1180	Mainly Beta	Sandwich	Immunoglobulin-like	Golgi alpha-mannosidase II	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF21365	Glycosyl hydrolase family 31 C-terminal domain (Glyco_hydro_31_3rd)	Glycosyl hydrolase family 31 C-terminal domain	Glycosyl hydrolases are key enzymes of carbohydrate metabolism. Family 31 comprises of enzymes that are, or similar to, alpha- galactosidases. This entry represents the 3rd beta sandwich domain.	Domain
A, B	PF01055	Glycosyl hydrolases family 31 TIM-barrel domain (Glyco_hydro_31_2nd)	Glycosyl hydrolases family 31 TIM-barrel domain	Glycosyl hydrolases are key enzymes of carbohydrate metabolism. Family 31 comprises of enzymes that are, or similar to, alpha- galactosidases. This entry corresponds to the second domain of family 31 enzymes and adopts a TIM-barrel fold.	Domain
A, B	PF00088	Trefoil (P-type) domain (Trefoil)	Trefoil (P-type) domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Maltase-glucoamylase, intestinal	hydrolase activity, acting on glycosyl bonds amylase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity alpha-glucosidase activity glucosidase activity alpha-1,4-glucosidase activity oligo-1,6-glucosidase activity binding carbohydrate binding glucan 1,4-alpha-glucosidase activity	carbohydrate metabolic process catabolic process glucan catabolic process carbohydrate catabolic process primary metabolic process macromolecule catabolic process polysaccharide metabolic process glucan metabolic process starch metabolic process polysaccharide catabolic process starch catabolic process metabolic process cellular process macromolecule metabolic process carbohydrate metabolic process catabolic process glucan catabolic process carbohydrate catabolic process primary metabolic process macromolecule catabolic process polysaccharide metabolic process glucan metabolic process starch metabolic process polysaccharide catabolic process starch catabolic process metabolic process cellular process macromolecule metabolic process maltose catabolic process oligosaccharide catabolic process oligosaccharide metabolic process disaccharide metabolic process maltose metabolic process disaccharide catabolic process dextrin catabolic process	membrane-bounded organelle intracellular anatomical structure tertiary granule membrane membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system tertiary granule intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle membrane-bounded organelle intracellular anatomical structure tertiary granule membrane membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system tertiary granule intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle organelle membrane secretory granule membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle ficolin-1-rich granule membrane ficolin-1-rich granule

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048395	Glycosyl hydrolase family 31, C-terminal domain	Domain
A, B	IPR013780	Glycosyl hydrolase, all-beta	Homologous Superfamily
A, B	IPR025887	Glycoside hydrolase family 31, N-terminal domain	Domain
A, B	IPR044913	P-type trefoil domain superfamily	Homologous Superfamily
A, B	IPR030459	Glycosyl hydrolases family 31, conserved site	Conserved Site
A, B	IPR000322	Glycoside hydrolase family 31, TIM barrel domain	Domain
A, B	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B	IPR000519	P-type trefoil domain	Domain
A, B	IPR030458	Glycosyl hydrolases family 31, active site	Active Site
A, B	IPR017957	P-type trefoil, conserved site	Conserved Site
A, B	IPR011013	Galactose mutarotase-like domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: O43451	type 2 diabetes mellitus cystic fibrosis hyperglycemia lung cancer MALT lymphoma osteosarcoma DOID:0081062 hypoglycemia lung carcinoma nephrosclerosis rheumatoid arthritis glycogen storage disease lung adenocarcinoma malignant mesothelioma non-small cell lung carcinoma type 2 diabetes mellitus cystic fibrosis hyperglycemia lung cancer MALT lymphoma osteosarcoma DOID:0081062 hypoglycemia lung carcinoma nephrosclerosis rheumatoid arthritis glycogen storage disease lung adenocarcinoma malignant mesothelioma non-small cell lung carcinoma tuberculosis

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.