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Literature summary for 1.13.11.55 extracted from
- Coupled enzymatic production of sulfite, thiosulfate, and hydrogen sulfide from sulfur: purification and properties of a sulfur oxygenase reductase from the facultatively anaerobic archaebacterium Desulfurolobus ambivalens (1989), J. Bacteriol., 171, 1638-1643.
General Stability
| General Stability | Organism |
|---|---|
| loses more than 80% of activity after three freezing and thawing steps | Acidianus ambivalens |
| partially inactivated by freezing at -80°C | Acidianus ambivalens |
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| 2-iodoacetic acid | - |
Acidianus ambivalens |  |
| 4-chloromercuribenzoic acid | - |
Acidianus ambivalens | |
| FAD | - |
Acidianus ambivalens | |
| Fe2+ | - |
Acidianus ambivalens | |
| Fe3+ | - |
Acidianus ambivalens | |
| additional information | the enmzyme is not affected by CN-, N3-, or reduced glutathione | Acidianus ambivalens | |
| N-ethylmaleimide | - |
Acidianus ambivalens | |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| cytoplasm | - |
Acidianus ambivalens | 5737 | - |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 40000 | - |
x * 40000, SDS-PAGE | Acidianus ambivalens |
| 550000 | - |
gel filtration | Acidianus ambivalens |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Acidianus ambivalens | P29082 | - |
- |
| Acidianus ambivalens DSM 3772 | P29082 | - |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
- |
Acidianus ambivalens |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| culture condition:aerobically-grown cell | not detectable in anaerobically grown cells | Acidianus ambivalens | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 10.6 | - |
pH 7.4, 85°C | Acidianus ambivalens |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| 4 sulfur + 4 H2O + O2 | in the presence of oxygen but not under a hydrogen atmosphere, the enzyme simultaneously produces sulfite, thiosulfate, and hydrogen sulfide from sulfur. Nonenzymatic control experiments show that thiosulfate is produced mainly in a chemical reaction between sulfite and sulfur. The ratio of sulfite to hydrogen sulfide production is 5:4 in the presence of zinc ions | Acidianus ambivalens | 2 hydrogen sulfide + 2 bisulfite + 2 H+ | - |
? | |
| 4 sulfur + 4 H2O + O2 | in the presence of oxygen but not under a hydrogen atmosphere, the enzyme simultaneously produces sulfite, thiosulfate, and hydrogen sulfide from sulfur. Nonenzymatic control experiments show that thiosulfate is produced mainly in a chemical reaction between sulfite and sulfur. The ratio of sulfite to hydrogen sulfide production is 5:4 in the presence of zinc ions | Acidianus ambivalens DSM 3772 | 2 hydrogen sulfide + 2 bisulfite + 2 H+ | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| ? | x * 40000, SDS-PAGE | Acidianus ambivalens |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| SOR | - |
Acidianus ambivalens |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 85 | - |
- |
Acidianus ambivalens |
Temperature Range [°C]
| Temperature Minimum [°C] | Temperature Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 75 | 100 | 75°C: about 40% of maximal activity | Acidianus ambivalens |
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