Annotations: 3OGR

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3ogra4	All beta proteins	Galactose-binding domain-like	Galactose-binding domain-like	automated matches	automated matches	(Trichoderma reesei ) [TaxId: 51453 ],	SCOPe (2.08)
A	d3ogra2	All beta proteins	Glycosyl hydrolase domain	Glycosyl hydrolase domain	automated matches	automated matches	(Trichoderma reesei ) [TaxId: 51453 ],	SCOPe (2.08)
A	d3ogra3	All beta proteins	Beta-galactosidase LacA, domain 3	Beta-galactosidase LacA, domain 3	automated matches	automated matches	(Trichoderma reesei ) [TaxId: 51453 ],	SCOPe (2.08)
A	d3ogra1	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	automated matches	automated matches	(Trichoderma reesei ) [TaxId: 51453 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	BetaGal_dom4_5	e3ogrA2	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: BetaGal_dom4_5	ECOD (1.6)
A	BetaGal_dom4_5_1	e3ogrA1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: BetaGal_dom4_5_1	ECOD (1.6)
A	BetaGal_dom2_C	e3ogrA9	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Beta-galactosidase LacA beta-sandwich domain (From Topology)	T: Beta-galactosidase LacA beta-sandwich domain	F: BetaGal_dom2_C	ECOD (1.6)
A	BetaGal_dom2_N	e3ogrA8	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: Glycosyl hydrolase domain (From Topology)	T: Glycosyl hydrolase domain	F: BetaGal_dom2_N	ECOD (1.6)
A	BetaGal_dom3	e3ogrA4	A: beta sandwiches	X: Beta-galactosidase LacA, domain 3 (From Topology)	H: Beta-galactosidase LacA, domain 3 (From Topology)	T: Beta-galactosidase LacA, domain 3	F: BetaGal_dom3	ECOD (1.6)
A	Glyco_hydro_42	e3ogrA5	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)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	2.102.20.10	Mainly Beta	3-layer Sandwich	beta-galactosidase, domain 2	Beta-galactosidase, domain 2	CATH (4.3.0)
A	2.60.390.10	Mainly Beta	Sandwich	beta-galactosidase, domain 3	Beta-galactosidase, domain 3	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	PF13363	Beta-galactosidase, domain 3 (BetaGal_dom3)	Beta-galactosidase, domain 3	This is the third domain of the five-domain beta-galactosidase enzyme that altogether catalyses the hydrolysis of beta(1-3) and beta(1-4) galactosyl bonds in oligosaccharides as well as the inverse reaction of enzymatic condensation and trans-glycosy ...	This is the third domain of the five-domain beta-galactosidase enzyme that altogether catalyses the hydrolysis of beta(1-3) and beta(1-4) galactosyl bonds in oligosaccharides as well as the inverse reaction of enzymatic condensation and trans-glycosylation. This domain has an Ig-like fold [1].	Domain
A	PF13364	Beta-galactosidase second all-beta domain (BetaGal_ABD2)	Beta-galactosidase second all-beta domain	This domain is the second all-beta domain from beta galactosidase enzymes which has a jelly roll fold [1]. These enzymes consist of a TIM-barrel catalytic domain and two all-beta domains (ABD), ABD1 is represented in Pfam:PF21317 and this entry repre ...	This domain is the second all-beta domain from beta galactosidase enzymes which has a jelly roll fold [1]. These enzymes consist of a TIM-barrel catalytic domain and two all-beta domains (ABD), ABD1 is represented in Pfam:PF21317 and this entry represents ABD2.	Domain
A	PF01301	Glycosyl hydrolases family 35 (Glyco_hydro_35)	Glycosyl hydrolases family 35		Domain
A	PF10435	Beta-galactosidase, domain 2 (BetaGal_dom2)	Beta-galactosidase, domain 2	This is the second domain of the five-domain beta-galactosidase enzyme that altogether catalyses the hydrolysis of beta(1-3) and beta(1-4) galactosyl bonds in oligosaccharides as well as the inverse reaction of enzymatic condensation and trans-glycos ...	This is the second domain of the five-domain beta-galactosidase enzyme that altogether catalyses the hydrolysis of beta(1-3) and beta(1-4) galactosyl bonds in oligosaccharides as well as the inverse reaction of enzymatic condensation and trans-glycosylation. This domain is made up of 16 antiparallel beta-strands and an alpha-helix at its C terminus. The fold of this domain appears to be unique. In addition, the last seven strands of the domain form a subdomain with an immunoglobulin-like (I-type Ig) fold in which the first strand is divided between the two beta-sheets. In penicillin spp this strand is interrupted by a 12-residue insertion which forms an additional edge-strand to the second beta-sheet of the sub-domain. The remainder of the second domain forms a series of beta-hairpins at its N terminus, four strands of which are contiguous with part of the Ig-like sub-domain, forming in total a seven-stranded antiparallel beta-sheet. This domain is associated with family Glyco_hydro_35, Pfam:PF01301, which is N-terminal to it, but itself has no metazoan members.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Beta-galactosidase	hydrolase activity, acting on glycosyl bonds beta-galactosidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity galactosidase activity	carbohydrate metabolic process primary metabolic process metabolic process cellular process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036833	Beta-galactosidase, domain 3 superfamily	Homologous Superfamily
A	IPR025300	Beta-galactosidase jelly roll domain	Domain
A	IPR001944	Glycoside hydrolase, family 35	Family
A	IPR031330	Glycoside hydrolase 35, catalytic domain	Domain
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR037110	Beta-galactosidase, domain 2 superfamily	Homologous Superfamily
A	IPR008979	Galactose-binding-like domain superfamily	Homologous Superfamily
A	IPR019801	Glycoside hydrolase, family 35, conserved site	Conserved Site
A	IPR025972	Beta-galactosidase, domain 3	Domain
A	IPR018954	Beta-galactosidase, domain 2	Domain

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.