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4-methylumbelliferyl alpha-D-glucopyranoside + H2O
4-methylumbelliferone + alpha-D-glucopyranose
not a common substrate for alpha-glucosidase I
-
-
?
4-methylumbelliferyl-alpha-D-glucopyranoside + H2O
4-methylumbelliferone + alpha-D-glucose
-
4°C, pH 6.25
-
-
?
4-methylumbelliferyl-alpha-D-glucoside
4-methylumbelliferone + alpha-D-glucose
-
pH 4.0, 60 min, 37°C
-
-
?
4-methylumbelliferyl-alpha-D-glucoside + H2O
4-methylumbelliferone + D-glucose
4-nitrophenyl D-alpha-glucopyranoside + H2O
4-nitrophenol + D-glucose
-
pH 4.3
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3-tetramethylrhodamine + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3-tetramethylrhodamine
cleaves the terminal alpha-1,2-linked glucose
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O-(CH2)8COOCH3
?
Glc3Man5GlcNAc + H2O
D-glucose + Glc2Man5GlcNAc
Glc3Man6GlcNAc + H2O
D-glucose + Glc2Man6GlcNAc
Glc3Man7GlcNAc + H2O
D-glucose + Glc2Man7GlcNAc
Glc3Man8GlcNAc + H2O
D-glucose + Glc2Man8GlcNAc
Glc3Man9GlcNAc + H2O
D-glucose + Glc2Man9GlcNAc
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
Glc3Man9GlcNAc2-lipid + H2O
D-glucose + Glc2Man9GlcNAc2-lipid
Glc3Man9GlcNAc2-peptide + H2O
D-glucose + Glc2Man9GlcNAc2-peptide
Glc3Man9GlcNAc2-pyridylamine + H2O
Glc2Man9GlcNAc2-pyridylamine + D-glucose
Glcalpha(1->2)Glcalpha(1->3)Glcalpha(1->3)Manalpha(1->2)Manalpha(1->2)Manalpha(1->3)Manbeta(1->4)GlcNacbeta(1->4)GlcNacbeta-pyridylamine + H2O
Glcalpha(1->3)Glcalpha(1->3)Manalpha(1->2)Manalpha(1->2)Manalpha(1->3)Manbeta(1->4)GlcNacbeta(1->4)GlcNacbeta-pyridylamine + D-glucose
kojibiose
?
-
pH 5.0, 35°C, 30 min
-
-
?
Maltoheptaose
?
-
pH 5.0, 35°C, 30 min
-
-
?
Maltohexaose
?
-
pH 5.0, 35°C, 30 min
-
-
?
maltopentaose
?
-
pH 5.0, 35°C, 30 min
-
-
?
maltose
?
-
pH 5.0, 35°C, 30 min
-
-
?
Maltotetraose
?
-
pH 5.0, 35°C, 30 min
-
-
?
maltotriose
?
-
pH 5.0, 35°C, 30 min
-
-
?
nigerose
?
-
pH 5.0, 35°C, 30 min
-
-
?
trehalose
?
-
pH 5.0, 35°C, 30 min
-
-
?
additional information
?
-
4-methylumbelliferyl-alpha-D-glucoside + H2O

4-methylumbelliferone + D-glucose
-
-
-
-
?
4-methylumbelliferyl-alpha-D-glucoside + H2O
4-methylumbelliferone + D-glucose
-
-
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O

beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
-
formation of alpha-glucose is delayed with respect to beta-glucose: enzyme operates with inversion of anomeric configuration
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic substrate, formation of the product demonstrates that the enzyme operates with inversion of anomeric configuration
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
-
formation of alpha-glucose is delayed with respect to beta-glucose: enzyme operates with inversion of anomeric configuration
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic trisaccharide
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic trisaccharide
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic substrate
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic substrate, formation of the product demonstrates that the enzyme operates with inversion of anomeric configuration
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3 + H2O
beta-D-glucose + alpha-D-Glc-(1-3)-alpha-D-Glc-O(CH2)8-COOCH3
-
synthetic substrate
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O-(CH2)8COOCH3

?
-
residues E613 and D617 play a crucial role in maintaining enzyme activity
-
-
?
alpha-D-Glc-(1-2)-alpha-D-Glc-(1-3)-alpha-D-Glc-O-(CH2)8COOCH3
?
-
residues E613 and D617 play a crucial role in maintaining enzyme activity
-
-
?
Glc3Man5GlcNAc + H2O

D-glucose + Glc2Man5GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man5GlcNAc + H2O
D-glucose + Glc2Man5GlcNAc
-
hydrolyzed at a rate similar to that of natural substrate Glc3Man9GlcNAc2
-
-
?
Glc3Man5GlcNAc + H2O
D-glucose + Glc2Man5GlcNAc
-
-
-
-
?
Glc3Man5GlcNAc + H2O
D-glucose + Glc2Man5GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man5GlcNAc + H2O
D-glucose + Glc2Man5GlcNAc
-
11% activity compared with Glc3Man9GlcNAc
-
?
Glc3Man6GlcNAc + H2O

D-glucose + Glc2Man6GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man6GlcNAc + H2O
D-glucose + Glc2Man6GlcNAc
-
slowly hydrolyzed
-
?
Glc3Man6GlcNAc + H2O
D-glucose + Glc2Man6GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man6GlcNAc + H2O
D-glucose + Glc2Man6GlcNAc
-
15% activity compared with Glc3Man9GlcNAc
-
?
Glc3Man7GlcNAc + H2O

D-glucose + Glc2Man7GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man7GlcNAc + H2O
D-glucose + Glc2Man7GlcNAc
-
slowly hydrolyzed
-
?
Glc3Man7GlcNAc + H2O
D-glucose + Glc2Man7GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man7GlcNAc + H2O
D-glucose + Glc2Man7GlcNAc
-
30% activity compared with Glc3Man9GlcNAc
-
?
Glc3Man8GlcNAc + H2O

D-glucose + Glc2Man8GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man8GlcNAc + H2O
D-glucose + Glc2Man8GlcNAc
-
slowly hydrolyzed
-
?
Glc3Man8GlcNAc + H2O
D-glucose + Glc2Man8GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man8GlcNAc + H2O
D-glucose + Glc2Man8GlcNAc
-
85% activity compared with Glc3Man9GlcNAc
-
?
Glc3Man9GlcNAc + H2O

D-glucose + Glc2Man9GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc + H2O
D-glucose + Glc2Man9GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc + H2O
D-glucose + Glc2Man9GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc + H2O
D-glucose + Glc2Man9GlcNAc
-
very good substrate: activity is highest against free oligosaccharide which contains a single N-acetylglucosamine at the reducing end and is lowered about 10% by the presence of a second N-acetylglucosamine at the reducing end
-
?
Glc3Man9GlcNAc + H2O
D-glucose + Glc2Man9GlcNAc
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O

?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
-
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
-
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
catalyzes initial step in post-glycosylation processing of cellular glycoprotein
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
catalyzes initial step in post-glycosylation processing of cellular glycoprotein
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
catalyzes initial step in post-glycosylation processing of cellular glycoprotein
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
-
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
specific involvement in the N-linked oligosaccharide-processing pathway
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in first step of processing of oligosaccharides after transfer from dolichyl diphosphate to proteins
-
-
?
Glc3Man9GlcNAc2 + H2O
?
-
involved in processing of asparagine-linked oligosaccharides
-
-
?
Glc3Man9GlcNAc2 + H2O

D-glucose + Glc2Man9GlcNAc2
-
trimming of the alpha1,2-linked glucosyl residue constitutive of the N-glycan precursor
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
alpha-glucosidase I removes the outermost alpha1,2-glucose unit from the N-linked core Glc3Man9GlcNAc2
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
hydrolyses specifically terminal alpha1,2-linked glucose residue
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2
-
3 glucose residues are required for catalysis
-
-
?
Glc3Man9GlcNAc2 + H2O
D-glucose + Glc2Man9GlcNAc2