Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary for 1.8.5.4 extracted from

  • Brito, J.A.; Sousa, F.L.; Stelter, M.; Bandeiras, T.M.; Vonrhein, C.; Teixeira, M.; Pereira, M.M.; Archer, M.
    Structural and functional insights into sulfide:quinone oxidoreductase (2009), Biochemistry, 48, 5613-5622.
    View publication on PubMed

Crystallization (Commentary)

Crystallization (Comment) Organism
hanging drop vapor diffusion method, using 2.2 M NH4H2PO4 and 100 mM Tris-HCl, pH 8.5 (final pH of the solution is 4.5), or 2.2 M NH4H2PO4/K2HPO4 at pH 4.5 Acidianus ambivalens

Inhibitors

Inhibitors Comment Organism Structure
cyanide
-
Acidianus ambivalens
HQNO a quinone competitive inhibitor Acidianus ambivalens

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
Acidianus ambivalens 16020
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
48000
-
about 48000 Da, SDS-PAGE Acidianus ambivalens

Organism

Organism UniProt Comment Textmining
Acidianus ambivalens
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Acidianus ambivalens

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.127
-
using 2,3-dimethyl-1,4-naphthoquinone as cosubstrate, at 50°C, pH 6.5 Acidianus ambivalens
0.194
-
using menadione as cosubstrate, at 50°C, pH 6.5 Acidianus ambivalens
0.47
-
using decylubiquinone as cosubstrate, at 50°C, pH 6.5 Acidianus ambivalens
0.531
-
using caldariella quinone as cosubstrate, at 50°C, pH 6.5 Acidianus ambivalens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfide + 2,3-dimethyl-1,4-naphthoquinone
-
Acidianus ambivalens sulfur + 2,3-dimethyl-1,4-naphthoquinol
-
?
sulfide + caldariellaquinone
-
Acidianus ambivalens sulfur + caldariellaquinol
-
?
sulfide + decylubiquinone
-
Acidianus ambivalens sulfur + decylubiquinol
-
?
sulfide + menadione
-
Acidianus ambivalens sulfur + menadiol
-
?

Subunits

Subunits Comment Organism
dimer x-ray crystallography Acidianus ambivalens

Synonyms

Synonyms Comment Organism
SQR
-
Acidianus ambivalens
sulfide:quinone oxidoreductase
-
Acidianus ambivalens

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
0.1
-
2,3-dimethyl-1,4-naphthoquinone at 50°C, pH 6.5 Acidianus ambivalens
0.15
-
menadione at 50°C, pH 6.5 Acidianus ambivalens
0.38
-
decylubiquinone at 50°C, pH 6.5 Acidianus ambivalens
0.43
-
caldariella quinone at 50°C, pH 6.5 Acidianus ambivalens

Cofactor

Cofactor Comment Organism Structure
FAD covalently bound Acidianus ambivalens