Ligand maltotriose

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Basic Ligand Information

Molecular Structure
Picture of maltotriose (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C18H32O16
maltotriose
FYGDTMLNYKFZSV-PXXRMHSHSA-N
Synonyms:
(alpha-D-glucopyranosyl-(1-4))m-alpha-D-glucopyranose, 4-[(1->4)-alpha-D-glucosyl]n-1-D-glucose, 4-{(1->4)-alpha-D-Glucosyl}n-1-D-glucose, alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranose, alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranose, alpha-maltotrioside, amylotriose, dextrin DP3, malto-triose, maltodextrin G3

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Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (10 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
maltotriose + ferricenium ion = ? + ferrocene
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sucrose + maltotriose = D-fructose + maltotetraose
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acarbose + maltotriose = acarviosyl-alpha-(1-4)-maltotriose + maltose
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maltotriose + H2O = maltose + D-glucose
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maltotriose + H2O = isomaltose + isopanose + panose + branched glucooligosaccharides
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malto-triose + H2O = alpha-D-glucose
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maltotriose + 2 H2O = 3 beta-D-glucose
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maltotriose + H2O = ?
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maltotriose + H2O = maltose + D-glucose
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4-[(1->4)-alpha-D-glucosyl]n-1-D-glucose = 1-alpha-D-[(1->4)-alpha-D-glucosyl]n-1-alpha-D-glucopyranoside
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In Vivo Product in Enzyme-catalyzed Reactions (11 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
sucrose + maltobiose = D-fructose + maltotriose
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amylopectin + H2O = maltose + maltotriose
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pullulan + H2O = maltotriose
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starch + H2O = maltohexaose + maltotetrose + maltotriose + maltose
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Substrate in Enzyme-catalyzed Reactions (111 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
maltotriose + phenazine methosulfate = D-maltotriono-1,5-lactone + reduced phenazine methosulfate
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maltotriose + 2,6-dichlorophenolindophenol = ? + reduced 2,6-dichlorophenolindophenol
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maltotriose + 2,6-dichlorophenolindophenol = maltotriono-1,5-lactone + reduced 2,6-dichlorophenolindophenol
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maltotriose + O2 = ?
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acetyl-CoA + maltotriose = CoA + 6-O-acetyl-alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranosyl-(1->4)-D-glucopyranose
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sucrose + maltotriose = ?
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UDP-glucose + maltotriose = UDP + amylose
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sucrose + maltotriose = D-glucose + beta-D-fructofuranosyl-(2->1)-maltotrioside
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maltotriose = dextran
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maltotriose = D-glucose
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maltotriose = cyclo-(-6)-alpha-D-Glc-(1-4)-alpha-D-Glc-(1-4)-alpha-D-Glc-(1-4)-alpha-D-Glc-(1-4)-alpha-D-Glc-(1-) + ?
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sucrose + maltotriose = D-fructose + maltotetraose
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sucrose + maltotriose = ?
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maltotriose = ?
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maltotriose = ?
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maltotriose + H2O = maltose + D-glucose
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maltotriose + H2O = D-maltose + D-glucose
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maltotriose + 2 H2O = 3 D-glucose
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maltotriose + H2O = ?
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maltotriose + H2O = ?
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maltotriose + H2O = D-glucose
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maltotriose + H2O = ?
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maltotriose + H2O = maltose + D-glucose
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maltotriose = ?
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Product in Enzyme-catalyzed Reactions (155 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
UDP-glucose + maltose = UDP + maltotriose
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dextran + H2O = glucose + maltose + maltotriose + maltotetraose
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maltotetraose + H2O = maltotriose + D-glucose
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beta-cyclodextrin-alpha-1,6-linked maltotriose + H2O = beta-cyclodextrin + maltotriose
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maltotetraose + H2O = maltotriose + beta-D-glucose
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maltoheptaose + H2O = maltotetraose + maltotriose
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branched chain oligosaccharides + H2O = maltotriose + higher maltosaccharides
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Activator in Enzyme-catalyzed Reactions (3 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
stimulating effect of maltooligosaccharides on the conversion of amylose, 15 mM, relative activity 210%
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stimulates, stimulation pattern of MtrA is similar to that of MtrB
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4fold stimulation of ATPase activity at 0.6 mM
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Inhibitor in Enzyme-catalyzed Reactions (11 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
a 40fold excess of unlabeled maltotriose reduces maltose uptake to about 30-40% of the control rate
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30 mM, 42% inhibition
exhibits strong substrate inhibition; strong substrate inhibition
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competitive
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3D Structure of Enzyme-Ligand-Complex (PDB) (5 results)

Enzyme Kinetic Parameters

kcat Value (Turnover Number) (80 results)

EC NUMBER
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
COMMENTARY
LITERATURE
11.45
-
pH 5.0, 85C
26.6
-
pH 5.5, 37C
268
-
pH 4.5, 90C; pH 4.5, 90C, recombinant enzyme
3.2
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pH 6.5, 85C, recombinant enzyme

KM Value (144 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.01
-
-
0.18
-
-
4.25
-
pH 5.0, 85C
26.7
-
pH 5.5, 37C
3.8
-
-
20.64
-
pH 6.5, 85C, recombinant enzyme
0.4
-
pH 5.0, 35C

Ki Value (3 results)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE

References & Links

Links to other databases for maltotriose

ChEBI
PubChem
ChEBI
PubChem