1PBG

THE THREE-DIMENSIONAL STRUCTURE OF 6-PHOSPHO-BETA GALACTOSIDASE FROM LACTOCOCCUS LACTIS

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1pbga_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	Family 1 of glycosyl hydrolase	6-phospho-beta-D-galactosidase, PGAL	(Lactococcus lactis ) [TaxId: 1358 ],	SCOPe (2.08)
B	d1pbgb_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	Family 1 of glycosyl hydrolase	6-phospho-beta-D-galactosidase, PGAL	(Lactococcus lactis ) [TaxId: 1358 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	(Trans)glycosidases	8043422	3000313	SCOP2B (2022-06-29)
B	SCOP2 Family	Family 1 of glycosyl hydrolase	8031044	4003184	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	(Trans)glycosidases	8043422	3000313	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Glyco_hydro_1	e1pbgA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_1	ECOD (1.6)
B	Glyco_hydro_1	e1pbgB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_1	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)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00232	Glycosyl hydrolase family 1 (Glyco_hydro_1)	Glycosyl hydrolase family 1	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	6-PHOSPHO-BETA-D-GALACTOSIDASE	hydrolase activity, acting on glycosyl bonds 6-phospho-beta-galactosidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity galactosidase activity	carbohydrate metabolic process catabolic process oligosaccharide catabolic process oligosaccharide metabolic process lactose catabolic process carbohydrate catabolic process primary metabolic process disaccharide metabolic process lactose metabolic process lactose catabolic process via tagatose-6-phosphate metabolic process disaccharide catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001360	Glycoside hydrolase family 1	Family
A, B	IPR018120	Glycoside hydrolase family 1, active site	Active Site
A, B	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B	IPR005928	6-phospho-beta-galactosidase	Family
A, B	IPR033132	Glycosyl hydrolases family 1, N-terminal conserved site	Conserved Site

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	6-phospho-beta-galactosidase M-CSA #877	This protein is involved in the first step of the subpathway that synthesises D-galactose 6-phosphate and beta-D-glucose from lactose 6-phosphate. It belongs to the glycosyl hydrolase 1 family.	Defined by 2 residues: GLU:A-160GLU:A-375 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.2.1.85 (PDB Primary Data) Search M-CSA Motif + EC 3.2.1.85

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.