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Ligand dithioerythritol

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Basic Ligand Information

Molecular Structure
Picture of dithioerythritol (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C4H10O2S2
dithioerythritol
VHJLVAABSRFDPM-ZXZARUISSA-N
Synonyms:
1,4-dithioerythritol, dithioerythreitol, DTE

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
thiosulfate + 2 dithioerythritol = sulfite + dithioerythritol disulfide + sulfide
show the reaction diagram
-

Substrate in Enzyme-catalyzed Reactions (19 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
ribonucleoside triphosphate + dithioerythritol = 2'-deoxyribonucleoside triphosphate + ? + H2O
show the reaction diagram
-
N-methylglycine + phosphate + dithioerythritol = acetyl phosphate + methylamine + dithioerythritol disulfide
show the reaction diagram
-
N,N,N-trimethylglycine + dithioerythritol = ?
show the reaction diagram
-
dithioerythritol + O2 = ? + H2O
show the reaction diagram
-
3'-phosphoadenylylsulfate + dithioerythritol = ?
show the reaction diagram
-
L-Cysteine + dithioerythritol = ?
show the reaction diagram
-

Enzyme Cofactor/Cosubstrate (7 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE

Activator in Enzyme-catalyzed Reactions (40 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
1 mM, slight activation
-
recovery from oxidase to dehydrogenase type
-
0.5 mM, maximal activation, 94% of activity with dithiothreitol
-
equally effective as DTT
-
absolutely required, highly stimulating
-
can serve as artificial electron donor
-
activates
-
10-20 mM, up to 39% inhibition
-
required for maximal activity
-
5 mM, activates
-
slight stimulation
-
5 mM, stimulation of 96%
-
10 mM, activates
-
stimulates enzyme activity up to 35%, optimum concentration: 6 mM
-
slight stimulation
-
2 mM, 200% activation
-
highly stimulating
-
maximal activation at 0.005 mM, inhibition above
-
in combination wit Mg2+
-
20% activation at 1 mM
-
1 mM, slight activation
-
presence decreases extent of inactivation by Hg2+, Ag2+, thimerosal or p-hydroxymercuribenzoate
-
activates, synergistic with EDTA
-
with palmitoylaspartate as substrate
-
effectively reverses heavy metal inactivation
-
1-13 mM, activates
-
increase of activity
-
4 mM, enhances the enzyme activity about threefold. The addition of both 4 mM dithioerythritol and 4 mM Mn2+ enhances the enzyme activity approximately 10fold compared to the results of an assay lacking dithioerythritol and Mn2+
-
increased catalytic activity with 10 mM
-
GSH, dithiothreitol or dithioerythritol are required for activity
-

Inhibitor in Enzyme-catalyzed Reactions (49 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
competitive
-
protection at low concentration, inhibition at high concentration, 100 mM
-
1.09 mM, 50% inhibition, partially reversed by diamide
-
10 mM
-
2 mM, total activity loss
-
0.05 mM, 82% inhibition of catechol oxidation, 95% inhibition of pyrogallol oxidation and 62% inhibition of dopa oxidation
-
50% inhibition at 4 mM
-
6.6 mM, 85% inhibition
-
up to 0.010 mM increase the enzyme activity, higher concentrations inhibited it
-
up to 0.010 mM increase the enzyme activity, higher concentrations inhibit
-
52% inhibition at 2 mM
-
above 20 mM
-
10 mM, 83% activity retains
-
13% inhibition with 13 mM
-
concentration of 2.5 mM decreases activity of the 3 enzyme forms in colonic mucosa by 20% at pH 4.2 and by 25% at pH 7.0, similar results with the 2 forms from colon tumors
-
formation of a catalytically inactive SH-enzyme from the catalytically active acetyl-S-enzyme
-
formation of a catalytically inactive SH-enzyme from the catalytically active acetyl-S-enzyme
-
5 mM, complete inhibition
-
no inhibition of wild type enzyme, inhibits activity of D56A and D56E mutant enzymes
-

3D Structure of Enzyme-Ligand-Complex (PDB) (38 results)

Enzyme Kinetic Parameters

KM Value (7 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
11
-
pH 7.7, 37°C
7.5
-
pH 7.7, 30°C

IC50 Value (2 results)

EC NUMBER
IC50 VALUE
IC50 VALUE MAXIMUM
COMMENTARY
LITERATURE

References & Links

Links to other databases for dithioerythritol

ChEBI
PubChem
ChEBI
PubChem