Ligand maltotetraose

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Basic Ligand Information

Molecular Structure
Picture of maltotetraose (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C24H42O21
maltotetraose
LUEWUZLMQUOBSB-ZLBHSGTGSA-N
Synonyms:
(Glcalpha(1-4))4, alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranose, malto-tetraose, maltodextrin G4, maltosetetraose, maltotetrose
Pathway Source
Pathways


Show all pahtways known for Show all BRENDA pathways known for maltotetraose

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (5 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
sucrose + maltotetraose = D-fructose + maltopentaose
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maltotetraose + H2O = 2 maltose
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maltotetraose + H2O = ?
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maltotetraose + H2O = ?
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maltotetraose + H2O = maltose + D-glucose
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In Vivo Product in Enzyme-catalyzed Reactions (12 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
sucrose + maltotriose = D-fructose + maltotetraose
show the reaction diagram
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Substrate in Enzyme-catalyzed Reactions (87 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
maltotetraose + 2,6-dichlorophenolindophenol = ? + reduced 2,6-dichlorophenolindophenol
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maltotetraose + 2,6-dichlorophenolindophenol = maltotetraono-1,5-lactone + reduced 2,6-dichlorophenolindophenol
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maltotetraose + acceptor = ?
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maltotetraose + O2 = ?
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acetyl-CoA + maltotetraose = CoA + 6-O-acetyl-alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranosyl-(1->4)-D-glucopyranose
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UDP-glucose + maltotetraose = ? + UDP
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sucrose + maltotetraose = D-glucose + beta-D-fructofuranosyl-(2,1)-maltotetraoside
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ADP-alpha-D-glucose + maltotetraose = ADP + maltopentaose
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maltotetraose = 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 + maltotetraose = D-fructose + maltopentaose
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2-deoxy-2-fluoro-alpha-maltosyl fluoride + maltotetraose = ?
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acarbose + maltotetraose = acarviosyl-(1->4)-alpha-maltotetraose + maltose
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maltotetraose + H2O = ?
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Maltotetraose = ?
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maltotetraose + H2O = ?
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maltotetraose + H2O = maltotriose + D-glucose
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maltotetraose + H2O = maltose + glucose + maltotriose
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maltotetraose + H2O = ?
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-
maltotetraose + H2O = D-glucose
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maltotetraose + H2O = 2 maltose
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Maltotetraose = ?
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Product in Enzyme-catalyzed Reactions (103 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
soluble starch + glycosyl acceptor = maltose + maltotriose + maltotetraose + maltopentaose
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sucrose + maltotriose = D-fructose + maltotetraose
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dextran + H2O = glucose + maltose + maltotriose + maltotetraose
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limit dextrin + H2O = maltotriose + maltotetraose + maltopentaose
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beta-cyclodextrin-alpha-1,6-linked maltotetraose + H2O = beta-cyclodextrin + maltotetraose
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maltopentaose + H2O = maltotetraose + beta-D-glucose
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amylopectin phi-dextrin + H2O = maltotetraose
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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 246%
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20 mM: 1.15fold activation
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5fold stimulation of ATPase activity at 0.6 mM
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Inhibitor in Enzyme-catalyzed Reactions (5 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
a 40fold excess of unlabeled maltotetraose reduces maltose uptake to about 60-70% of the control rate
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30 mM, 51% inhibition
10 mM, 0.4% amylose, relative activity 50%
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3D Structure of Enzyme-Ligand-Complex (PDB) (10 results)

Enzyme Kinetic Parameters

kcat Value (Turnover Number) (71 results)

EC NUMBER
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
COMMENTARY
LITERATURE
14.7
-
pH 6.0, 37C
5.49
-
-
3.95
-
pH 5.0, 85C
4.34
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pH 6.5, 85C, recombinant enzyme

KM Value (119 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.0064
-
-
3.79
-
IP-SI, immunoprecipitated human sucrase-isomaltase complex
23.8
-
pH 6.0, 37C
10.9
-
-
11.1
-
-
50
-
-
11.84
-
pH 6.5, 85C, recombinant enzyme
0.1
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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 maltotetraose

ChEBI
PubChem
ChEBI
PubChem