Activating Compound | Comment | Organism | Structure |
---|---|---|---|
ammonium sulfate | 1 M, optimal concentration for stimulation | Acidiphilium acidophilum |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
HgCl2 | 0.05 mM, complete loss of activity | Acidiphilium acidophilum | |
additional information | not inhibitory: azide at 1 mM, N-ethylmaleimide at 0.05 mM | Acidiphilium acidophilum | |
thiosulfate | product inhibition, 40% inhibition at 1 mM | Acidiphilium acidophilum |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.3 | - |
tetrathionate | pH 3.0, 30°C | Acidiphilium acidophilum |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
soluble | - |
Acidiphilium acidophilum | - |
- |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Acidiphilium acidophilum | - |
- |
- |
Purification (Comment) | Organism |
---|---|
high salt concentrations are needed to release enzyme activity during cell disruption | Acidiphilium acidophilum |
Storage Stability | Organism |
---|---|
-20°C, enzyme is not affected by freezing and thawing | Acidiphilium acidophilum |
0°C, stable for one week | Acidiphilium acidophilum |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | hydrolysis of trithionate, reaction of EC 3.12.1.1, and of tetrathionate are catalyzed by two different enzymes | Acidiphilium acidophilum | ? | - |
? | |
tetrathionate + H2O | - |
Acidiphilium acidophilum | sulfur + thiosulfate + sulfate + 2 H+ | stoichiometric conversion of tetrathionate to thiosulfate, sulfur and two protons | ? |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
40 | - |
- |
Acidiphilium acidophilum |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
30 | - |
100 h, complete loss of activity | Acidiphilium acidophilum |
40 | - |
20 h, complete loss of activity | Acidiphilium acidophilum |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
3 | - |
- |
Acidiphilium acidophilum |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
2 | - |
about 50% of maximum activity | Acidiphilium acidophilum |
6 | - |
no residual activity | Acidiphilium acidophilum |