Annotations: 4E8D

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	KOG0496	e4e8dB4	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: KOG0496	ECOD (1.6)
B	BetaGal_dom4_5_2	e4e8dB5	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: BetaGal_dom4_5_2	ECOD (1.6)
B	Glyco_hydro_42	e4e8dB3	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_42	ECOD (1.6)
A	KOG0496	e4e8dA7	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: KOG0496	ECOD (1.6)
A	BetaGal_dom4_5_2	e4e8dA8	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: BetaGal_dom4_5_2	ECOD (1.6)
A	Glyco_hydro_42	e4e8dA6	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_42	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
B	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF21317	Beta-galactosidase, first all-beta domain (BetaGal_ABD_1)	Beta-galactosidase, first all-beta domain	Beta-galactosidases belong to glycosyl hydrolase 35 family (GH35) which catalyse the cleaveage of beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans. These proteins consist of a catalytic TIM-barrel and ...	Beta-galactosidases belong to glycosyl hydrolase 35 family (GH35) which catalyse the cleaveage of beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans. These proteins consist of a catalytic TIM-barrel and two all-beta domains (ABD1 and ABD2) [1-5]. This entry represents the first all-beta domain ABD1. ABD2 is represented in Pfam:PF13364.	Domain
A, B	PF01301	Glycosyl hydrolases family 35 (Glyco_hydro_35)	Glycosyl hydrolases family 35	-	Domain
A, B	PF21467	Beta-galactosidase, galactose-binding domain (BetaGal_gal-bd)	Beta-galactosidase, galactose-binding domain	Beta-galactosidase belongs to Glycoside hydrolase family 35 [1-5]. This entry represents the galactose-binding domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Glycosyl hydrolase, family 35	hydrolase activity, acting on glycosyl bonds beta-galactosidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity galactosidase activity	carbohydrate metabolic process organic substance metabolic process primary metabolic process metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048913	Beta-galactosidase, galactose-binding domain	Domain
A, B	IPR001944	Glycoside hydrolase, family 35	Family
A, B	IPR031330	Glycoside hydrolase 35, catalytic domain	Domain
A, B	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B	IPR048912	Beta-galactosidase 1-like , first all-beta domain	Domain
A, B	IPR008979	Galactose-binding-like domain superfamily	Homologous Superfamily
A, B	IPR026283	Beta-galactosidase 1-like	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.