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Literature summary for 1.8.5.4 extracted from

  • Schuetz, M.; Shahak, Y.; Padan, E.; Hauska, G.
    Sulfide-quinone reductase from Rhodobacter capsulatus. Purification, cloning, and expression (1997), J. Biol. Chem., 272, 9890-9894.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli BL21(DE3) cells Rhodobacter capsulatus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.002
-
Sulfide in 10 mM bis-Tris-HCl, pH 6.5, temperature not specified in the publication Rhodobacter capsulatus
0.002
-
decylubiquinone in 10 mM bis-Tris-HCl, pH 6.5, temperature not specified in the publication Rhodobacter capsulatus

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
Rhodobacter capsulatus 16020
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
47000
-
calculated from amino acid sequence Rhodobacter capsulatus
55000
-
SDS-PAGE Rhodobacter capsulatus

Organism

Organism UniProt Comment Textmining
Rhodobacter capsulatus Q52722
-
-
Rhodobacter capsulatus DSM 155 Q52722
-
-

Purification (Commentary)

Purification (Comment) Organism
DEAE-cellulose column chromatography and Mono Q column chromatography Rhodobacter capsulatus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.1
-
crude extract, in 10 mM bis-Tris-HCl, pH 6.5, temperature not specified in the publication Rhodobacter capsulatus
3.5
-
after 35fold purification, in 10 mM bis-Tris-HCl, pH 6.5, temperature not specified in the publication Rhodobacter capsulatus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfide + decylubiquinone
-
Rhodobacter capsulatus sulfur + decylubiquinol
-
?
sulfide + decylubiquinone
-
Rhodobacter capsulatus DSM 155 sulfur + decylubiquinol
-
?

Synonyms

Synonyms Comment Organism
SQR
-
Rhodobacter capsulatus
sulfide-quinone reductase
-
Rhodobacter capsulatus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.3
-
-
Rhodobacter capsulatus

Cofactor

Cofactor Comment Organism Structure
FAD
-
Rhodobacter capsulatus

pI Value

Organism Comment pI Value Maximum pI Value
Rhodobacter capsulatus calculated from amino acid sequence
-
9.7