8QQH

Chains	Accession	Name	Description	Comments	Source
A [auth AAA], B [auth BBB]	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

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth AAA], B [auth BBB]	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	membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle vacuole cytoplasm cellular anatomical entity intracellular membrane-bounded organelle

Chains	Accession	Name	Type
A [auth AAA], B [auth BBB]	IPR001944	Glycoside hydrolase, family 35	Family
A [auth AAA], B [auth BBB]	IPR031330	Glycoside hydrolase 35, catalytic domain	Domain
A [auth AAA], B [auth BBB]	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A [auth AAA], B [auth BBB]	IPR037110	Beta-galactosidase, domain 2 superfamily	Homologous Superfamily
A [auth AAA], B [auth BBB]	IPR008979	Galactose-binding-like domain superfamily	Homologous Superfamily
A [auth AAA], B [auth BBB]	IPR018954	Beta-galactosidase, domain 2	Domain