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3.2.1.108: lactase

This is an abbreviated version!
For detailed information about lactase, go to the full flat file.

Word Map on EC 3.2.1.108

Reaction

lactose
+
H2O
=
D-galactose
 +
D-glucose

Synonyms

intestinal lactase, lactase, lactase phlorizin hydrolase, lactase phlorizin-hydrolase, lactase-phlorizin hydrolase, lactase-phlorizin hydrolase LPH, lactase-phlorozin hydrolase, lactase/phlorizin hydrolase, LCT, LPH

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.108 lactase

KM Value

KM Value on EC 3.2.1.108 - lactase

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KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
22.2
2-O-beta-D-galactopyranosyl-D-xylose
-
100 mM sodium maleate buffer, pH 6.0, 25°C
8.5
3-O-beta-D-galactopyranosyl-D-xylose
-
100 mM sodium maleate buffer, pH 6.0, 25°C
58.8
4-O-beta-D-galactopyranosyl-D-xylose
-
100 mM sodium maleate buffer, pH 6.0, 25°C
2.78 - 4.4
cellobiose
0.149
daidzein-7-glucoside
-
pH 6, 37°C
0.085
genistein-7-glucoside
-
pH 6, 37°C
5.1 - 30
lactose
0.002 - 0.44
phlorizin
0.046
quercetin-3-glucoside
-
pH 6, 37°C
0.044
quercetin-4'-glucoside
-
pH 6, 37°C
additional information
additional information
-
rotavirus infection decreases Vmax of LPH, overview
-