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Literature summary for 1.8.5.4 extracted from

  • Schuetz, M.; Klughammer, C.; Griesbeck, C.; Quentmeier, A.; Friedrich, C.G.; Hauska, G.
    Sulfide-quinone reductase activity in membranes of the chemotrophic bacterium Paracoccus denitrificans GB17 (1998), Arch. Microbiol., 170, 353-360.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
antimycin A
-
Paracoccus denitrificans
aurachin C
-
Paracoccus denitrificans
additional information SQR is insensitive to cyanide Paracoccus denitrificans
Myxothiazol
-
Paracoccus denitrificans
Stigmatellin
-
Paracoccus denitrificans

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0031
-
decylubiquinone in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans
0.026
-
Sulfide in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans

Organism

Organism UniProt Comment Textmining
Paracoccus denitrificans
-
-
-
Paracoccus denitrificans GB17
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfide + decylubiquinone
-
Paracoccus denitrificans polysulfide + decylubiquinol
-
?
sulfide + decylubiquinone
-
Paracoccus denitrificans GB17 polysulfide + decylubiquinol
-
?

Synonyms

Synonyms Comment Organism
SQR
-
Paracoccus denitrificans
sulfide:quinone oxidoreductase
-
Paracoccus denitrificans

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.3
-
-
Paracoccus denitrificans

pH Range

pH Minimum pH Maximum Comment Organism
6 9.5
-
Paracoccus denitrificans

Cofactor

Cofactor Comment Organism Structure
FAD
-
Paracoccus denitrificans

IC50 Value

IC50 Value IC50 Value Maximum Comment Organism Inhibitor Structure
0.015
-
in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans antimycin A
0.02
-
in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans Stigmatellin
0.022
-
in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans Myxothiazol
0.028
-
in 50 mM Bis-Tris (pH 6.5), temperature not specified in the publication Paracoccus denitrificans aurachin C