1.20.4.4: arsenate reductase (thioredoxin)
This is an abbreviated version!
For detailed information about arsenate reductase (thioredoxin), go to the full flat file.
Reaction
Synonyms
ARS, ArsC, ArsC1, ArsC1', ArsC3, arsenate reductase, Bs_ArsC, pI258 arsenate reductase, plasmid pI258 arsenate reductase, Sa_ArsC, Strop634, thioredoxin-arsenate reductase complex, thioredoxin-coupled arsenate reductase, Trx-coupled arsenate reductase
ECTree
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KM Value
KM Value on EC 1.20.4.4 - arsenate reductase (thioredoxin)
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0.009
arsenate
wild-type Staphylococcus aureus, condition: 150 mM KCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.022
arsenate
wild-type Staphylococcus aureus, condition: 150 mM NaCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.047
arsenate
wild-type Bacillus subtilis, condition: 50 mM K2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.054
arsenate
wild-type Bacillus subtilis, condition: 150 mM KCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.058
arsenate
wild-type Bacillus subtilis, condition: 150 mM NaCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.061
arsenate
wild-type Staphylococcus aureus, condition: 50 mM Na2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.064
arsenate
wild-type Bacillus subtilis, condition: 50 mM Na2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.08
arsenate
H62Q mutant Staphylococcus aureus, condition: 50 mM Na2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.081
arsenate
wild-type Staphylococcus aureus, condition: 50 mM K2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.087
arsenate
H62Q mutant Staphylococcus aureus, condition: 150 mM KCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.123
arsenate
H62Q mutant Staphylococcus aureus, condition: 150 mM NaCl, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
0.131
arsenate
H62Q mutant Staphylococcus aureus, condition: 50 mM K2SO4, study about the impact of potassium and the tetrahedral oxyanion sulfate on the steady-state kinetic parameters
additional information
pH 7.5, 37°C, at low substrate concentrations the Km-value for arsenate is 0.0008 mM. Above 1 mM arsenate, a second increase in rate with increasing substrate is observed, with an apparent Km of 2 mM arsenate
additional information
additional information
NADPH oxidation shows Michaelis-Menten kinetics with a Km of 1 microM AsO43- and an apparent Vmax of 200 nmol/min per mg of protein. At high substrate concentration (above 1 mM AsO43-), a secondary rise in the reaction rate is observed, with a Km of 2 mM and an apparent Vmax of 450 nmol/min per mg of protein
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