EC Number   |
Substrates |
Organism |
Products |
Reversibility |
|---|
   1.8.5.4 | 2 sulfide + ubiquinone-1 |
- |
Homo sapiens |
hydrogen disulfide + ubiquinol-1 |
- |
? |
| 1.8.5.4 | HS- + quinone |
- |
Rattus norvegicus |
polysulfide + quinol |
- |
? |
| 1.8.5.4 | more |
no activity with vitamin K1 |
Chlorobaculum thiosulfatiphilum |
? |
- |
? |
| 1.8.5.4 | more |
the enzymatic reaction catalyzed by sulfide:quinone oxidoreductase includes the oxidation of sulfide compounds H2S, HS-, and S2- to soluble polysulfide chains or to elemental sulfur in the form of octasulfur rings |
Acidithiobacillus ferrooxidans |
? |
- |
? |
| 1.8.5.4 | more |
cyanide, sulfite, or sulfide can act as the sulfane sulfur acceptor in reactions that exhibit pH optima at 8.5, 7.5, or 7.0, respectively, and produce thiocyanate, thiosulfate, or a putative sulfur analogue of hydrogen peroxide, i.e. H2S2, respectively. Sulfite is the physiological acceptor of the sulfur and the reaction is the predominant source of the thiosulfate produced during H2S oxidation by mammalian tissues |
Homo sapiens |
? |
- |
? |
| 1.8.5.4 | more |
SQR oxidizes sulfide to polysulfide, which spontaneously reacts with glutathione (GSH) to produce glutathione persulfide (GSSH), PDO oxidizes GSSH to sulfite, which spontaneously reacts with polysulfide to produce thiosulfate |
Synechococcus sp. PCC 7002 |
? |
- |
- |
| 1.8.5.4 | more |
quinone binding site structure analysis and binding mechanism by CmSQR, overview |
Caldivirga maquilingensis |
? |
- |
- |
| 1.8.5.4 | more |
sulfide-dependent duroquinone-reducing activity of purified wild-type and single cysteine mutant TrSqrF variants, overview |
Thiocapsa roseopersicina |
? |
- |
- |
| 1.8.5.4 | more |
quinone binding site structure analysis and binding mechanism by CmSQR, overview |
Caldivirga maquilingensis IC-167 |
? |
- |
- |
| 1.8.5.4 | n H2S + n quinone |
- |
Alkalihalobacillus clausii |
polysulfide + n quinol |
- |
? |
