Ligand Pectin

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Basic Ligand Information

Molecular Structure
Picture of Pectin (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C25H34O25R2
Pectin
GMVJTFZRAUCHLC-UHFFFAOYSA-N

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (11 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
pectin + H2O = ferulic acid + ?
show the reaction diagram
-
pectin + H2O = ?
show the reaction diagram
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pectin + H2O = digalacturonate
show the reaction diagram
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pectin = ?
show the reaction diagram
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pectin = ?
show the reaction diagram
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pectin = ?
show the reaction diagram
-

In Vivo Product in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE

Substrate in Enzyme-catalyzed Reactions (32 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
pectin + H2O = ferulic acid + ?
show the reaction diagram
-
pectin + H2O = pectin + beta-D-glucose
show the reaction diagram
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pectin + H2O = galacturonic acid oligosaccharides
show the reaction diagram
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pectin + H2O = ?
show the reaction diagram
-
pectin = ?
show the reaction diagram
-
pectin = ?
show the reaction diagram
-

Product in Enzyme-catalyzed Reactions (5 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
pectin + H2O = pectin + beta-D-glucose
show the reaction diagram
-
-
protopectin + H2O = pectin
show the reaction diagram
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protopectin = pectin + ?
show the reaction diagram
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Activator in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
dietary pectin relative to cellulose activates, especially the glycine-dependent activity
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from Citrus sp., 0.02-0.4% w/v, activation of desalted enzyme, activation is increased in presence of suboptimal concentration of NaCl
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Inhibitor in Enzyme-catalyzed Reactions (6 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
enzyme activity decreases to half of its original activity at 2 mg/ml of pectin. The thiol groups of alcohol dehydrogenase are involved in binding
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from avocado root or cell wall
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inhibits hydrolysis of p-nitrophenyl acetate
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pectin freshly isolated from citrus segment membranes is a strong inhibitor of lipase activity, commercial citrus pectin shows a weak inhibitory effect (activity is reduced by 20%)
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substrate inhibition
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Enzyme Kinetic Parameters

kcat Value (Turnover Number) (32 results)

EC NUMBER
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
COMMENTARY
LITERATURE

KM Value (27 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.49
-
-
0.02
-
-
0.35
-
pH 5.0, 45°C
-999
-
Km value of wild-type 8.2 mg/ml, of truncated mutant 7.6 mg/ml, respectively, pH 8.5, 70°C

References & Links

Links to other databases for Pectin

ChEBI
PubChem
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PubChem