Enzyme:3.2.1.23

Upper Levels: EC3.-.-.- Hydrolases. : EC3.2.-.- Glycosylases. : EC3.2.1.- Glycosidases, i.e.enzymes hydrolyzing O- and S-glycosyl

IDs and Links
IUBMB	EC3
ExPaSy	NiceZyme 3.2.1.23

beta-D-galactoside galactohydrolase
Systematic Name	beta-D-galactoside galactohydrolase
Common Name	beta-galactosidase lactase maxilact hydrolact S 2107

Galactosyl-glycerol + H2O => D-Galactose + Glycerol (links: Galactosyl-glycerol = (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol + Propane-1,2,3-triol)
Galactosyl-glycerol <Mapping> AtomMap:BMFYB3OHS601$BMSUM6A0--05$0 (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol 4 ↔ 1 5 ↔ 2 6 ↔ 3 7 ↔ 4 8 ↔ 5 9 ↔ 6 Galactosyl-glycerol <Mapping> AtomMap:BMFYB3OHS601$BMFYS3HOq011$0 Propane-1,2,3-triol 1 ↔ 1 2 ↔ 2 3 ↔ 3

3-Keto-lactose + H2O => D-Glucose + 3-Keto-D-galactose (links: 3-Keto-lactose = D-Glucose + 3-Keto-D-galactose)
3-Keto-lactose <Mapping> AtomMap:BMSUD2K0GC01$BMSUM6A0--06$0 D-Glucose 7 ↔ 1 8 ↔ 2 9 ↔ 3 10 ↔ 4 11 ↔ 5 12 ↔ 6 3-Keto-lactose <Mapping> AtomMap:BMSUD2K0GC01$BMSUM6K0--02$0 3-Keto-D-galactose 1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 5 ↔ 5 6 ↔ 6

Galactan + H2O => 2 D-Galactose (links: Galactan = (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol)
Galactan <Mapping> AtomMap:BMSUPnA0GG02$BMSUM6A0--05$0 (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol 7 ↔ 1 8 ↔ 2 9 ↔ 3 10 ↔ 4 11 ↔ 5 12 ↔ 6 Galactan <Mapping> AtomMap:BMSUPnA0GG02$BMSUM6A0--05$1 (2nd) (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol 1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 5 ↔ 5 6 ↔ 6

Lactose + H2O => D-Glucose + D-Galactose (links: alpha-Lactose = D-Glucose + (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol)
alpha-Lactose <Mapping> AtomMap:BMSUD2A0GC01$BMSUM6A0--06$1 (2nd) D-Glucose 7 ↔ 1 8 ↔ 2 9 ↔ 3 10 ↔ 4 11 ↔ 5 12 ↔ 6 alpha-Lactose <Mapping> AtomMap:BMSUD2A0GC01$BMSUM6A0--05$0 (3R,4S,5R,6R) -6- (Hydroxymethyl) oxane-2,3,4,5-tetrol 1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 5 ↔ 5 6 ↔ 6