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Literature summary for 1.8.5.4 extracted from

  • Arieli, B.; Shahak, Y.; Taglicht, D.; Hauska, G.; Padan, E.
    Purification and characterization of sulfide-quinone reductase, a novel enzyme driving anoxygenic photosynthesis in Oscillatoria limnetica (1994), J. Biol. Chem., 269, 5705-5711.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
aurachin C
-
Pseudanabaena limnetica
cyanide
-
Pseudanabaena limnetica
additional information insensitive to 3-(3'-4'-dichlorophenyl)-1,1-dimethylurea and 2-iodo-6-isopropyl-3-methyl-2',4,4'-trinitrodiphenyl ether Pseudanabaena limnetica
n-nonyl-4-hydroxyquinoline-N-oxide
-
Pseudanabaena limnetica

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.008
-
Sulfide in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica
0.031
-
plastoquinone-1 in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica

Localization

Localization Comment Organism GeneOntology No. Textmining
thylakoid membrane
-
Pseudanabaena limnetica 42651
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
57000
-
gel filtration Pseudanabaena limnetica

Organism

Organism UniProt Comment Textmining
Pseudanabaena limnetica
-
-
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, phenyl-TSK column chromatography, T SK-gel filtration and analytical gel filtration Pseudanabaena limnetica

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.018
-
enzyme from washed membrane, in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica
1.88
-
after 105fold purification, in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfide + plastoquinone-1
-
Pseudanabaena limnetica sulfur + plastoquinol-1
-
?

Subunits

Subunits Comment Organism
monomer 1 * 57000, SDS-PAGE Pseudanabaena limnetica

Synonyms

Synonyms Comment Organism
SQR
-
Pseudanabaena limnetica
sulfide-quinone reductase
-
Pseudanabaena limnetica

Cofactor

Cofactor Comment Organism Structure
FAD
-
Pseudanabaena limnetica

IC50 Value

IC50 Value IC50 Value Maximum Comment Organism Inhibitor Structure
0.000049
-
in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica aurachin C
0.00014
-
in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C Pseudanabaena limnetica n-nonyl-4-hydroxyquinoline-N-oxide

General Information

General Information Comment Organism
physiological function sulfide-quinone reductase catalyzes anoxygenic photosynthesis in Oscillatoria limnetica Pseudanabaena limnetica