EC Number | Inhibitors | Comment | Organism | Structure |
---|---|---|---|---|
1.8.2.2 | azide | 63% inhibition at 0.5 mM | Acidiphilium acidophilum | |
1.8.2.2 | EDTA | not inhibitory | Acidiphilium acidophilum | |
1.8.2.2 | N-ethylmaleimide | not inhibitory | Acidiphilium acidophilum | |
1.8.2.2 | Na2SeO3 | 39% inhibition at 0.5 mM | Acidiphilium acidophilum | |
1.8.2.2 | Na2SeO4 | 51% inhibition at 5 mM | Acidiphilium acidophilum | |
1.8.2.2 | p-chloromercuribenzoate | 32% inhibition at 0.1 mM | Acidiphilium acidophilum | |
1.8.2.2 | SO32- | 100% inhibition at 0.5 mM | Acidiphilium acidophilum |
EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
1.8.2.2 | 0.54 | - |
thiosulfate | at pH 7 | Acidiphilium acidophilum |
EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|---|
1.8.2.2 | 20000 | - |
2 * 24000 + 2 * 20000, SDS-PAGE, both subunits contain c553-type heme | Acidiphilium acidophilum |
1.8.2.2 | 24000 | - |
2 * 24000 + 2 * 20000, SDS-PAGE, both subunits contain c553-type heme | Acidiphilium acidophilum |
1.8.2.2 | 102000 | - |
gel filtration | Acidiphilium acidophilum |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
1.8.2.2 | Acidiphilium acidophilum | - |
- |
- |
EC Number | Purification (Comment) | Organism |
---|---|---|
1.8.2.2 | using ammonium sulfate precipitation, hydrophobic interaction chromatography, anion-exchange chromatography and gel filtration | Acidiphilium acidophilum |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
1.8.2.2 | 4925 | - |
purified enzyme | Acidiphilium acidophilum |
EC Number | Storage Stability | Organism |
---|---|---|
1.8.2.2 | frozen, stable for at least 3 months | Acidiphilium acidophilum |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
1.8.2.2 | additional information | no activity with: pyrrolo-quinoline quinone, methyl- or benzyl viologen, methylthiazol tetrazolium bromide | Acidiphilium acidophilum | ? | - |
? | |
1.8.2.2 | additional information | NAD+, methylene blue, 2,6-dichlorophenol indophenol | Acidiphilium acidophilum | ? | - |
? | |
1.8.2.2 | additional information | no activity with: NADP+, O2 | Acidiphilium acidophilum | ? | - |
? | |
1.8.2.2 | thiosulfate + oxidized acceptor | phenazine methosulfate and phenazine ethosulfate assayed in the presence of dichlorophenolindophenol and Thialhalivibrio versutus cytochrome c550 support low, but significant enzyme activities | Acidiphilium acidophilum | tetrathionate + reduced acceptor | - |
? | |
1.8.2.2 | thiosulfate + oxidized acceptor | mammalian cytochrome c acts as electron acceptor | Acidiphilium acidophilum | tetrathionate + reduced acceptor | - |
? | |
1.8.2.2 | thiosulfate + oxidized acceptor | Wurster's blue can also serve as electron acceptor | Acidiphilium acidophilum | tetrathionate + reduced acceptor | - |
? | |
1.8.2.2 | thiosulfate + oxidized acceptor | ferricyanide is a good electron acceptor | Acidiphilium acidophilum | tetrathionate + reduced acceptor | - |
? | |
1.8.2.2 | thiosulfate + oxidized acceptor | ferricyanide acts as electron acceptor | Acidiphilium acidophilum | tetrathionate + reduced acceptor | - |
? |
EC Number | Subunits | Comment | Organism |
---|---|---|---|
1.8.2.2 | heterotetramer | 2 * 24000 + 2 * 20000, SDS-PAGE, both subunits contain c553-type heme | Acidiphilium acidophilum |
EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|---|
1.8.2.2 | - |
- |
20% decrease of activity in 2 h and 60% decrease of activity in 7 h | Acidiphilium acidophilum |
1.8.2.2 | 30 | - |
50% decrease of activity in 2 h | Acidiphilium acidophilum |
EC Number | Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
1.8.2.2 | 8500 | - |
thiosulfate | at pH 7 | Acidiphilium acidophilum | |
1.8.2.2 | 250000 | - |
thiosulfate | at least, at pH 3 | Acidiphilium acidophilum |
EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|---|
1.8.2.2 | 3 | - |
purified enzyme | Acidiphilium acidophilum |
EC Number | pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|---|
1.8.2.2 | 2 | - |
unstable below | Acidiphilium acidophilum |
EC Number | Cofactor | Comment | Organism | Structure |
---|---|---|---|---|
1.8.2.2 | heme c | 5.3 mole per mol of native enzyme, made up of two different c-553 hemes, present in both subunit types | Acidiphilium acidophilum |