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1.8.5.4: bacterial sulfide:quinone reductase

This is an abbreviated version!
For detailed information about bacterial sulfide:quinone reductase, go to the full flat file.

Word Map on EC 1.8.5.4

Reaction

n HS- + n quinone =

Polysulfide
+ n quinol

Synonyms

CmSQR, CpSQR, CT1087, HMT2, III SQR, membrane-bound sulfide:quinone oxidoreductases, SQOR, SQR, Sqrdl, sqrF, Suden_1879, Suden_2082, Suden_619, sulfide quinone oxidoreductase, sulfide quinone reductase, sulfide-quinone oxidoreductase, sulfide-quinone reductase, sulfide: quinone oxidoreductase, sulfide:decylubiquinone oxidoreductase, sulfide:quinone oxidoreductase, sulfidequinone reductase-like protein, TrSqrF, type I SQR, type III sulfide:quinone oxidoreductase, type VI sulfide:quinone oxidoreductase

ECTree

     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.5 With a quinone or similar compound as acceptor
                1.8.5.4 bacterial sulfide:quinone reductase

Specific Activity

Specific Activity on EC 1.8.5.4 - bacterial sulfide:quinone reductase

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SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.018
-
enzyme from washed membrane, in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C
0.1
crude extract, in 10 mM bis-Tris-HCl, pH 6.5, temperature not specified in the publication
0.11
-
cell-free extract, at pH 7.0, temperature not specified in the publication
0.127
-
using 2,3-dimethyl-1,4-naphthoquinone as cosubstrate, at 50°C, pH 6.5
0.194
-
using menadione as cosubstrate, at 50°C, pH 6.5
0.47
-
using decylubiquinone as cosubstrate, at 50°C, pH 6.5
0.531
-
using caldariella quinone as cosubstrate, at 50°C, pH 6.5
1.17
unpurified enzyme, at pH 8.0 and 25°C
1.88
-
after 105fold purification, in 10 mM HEPES, pH 7.4, 10 mM MgCl, 10 mM KCl, at 22°C
12.7
purified recombinant enzyme, at pH 7.4 and 47°C
20.55
-
after 186.8fold purification, at pH 7.0, temperature not specified in the publication
55.4
-
in 50 mM Tris-HCl (pH 7.5), temperature not specified in the publication
580.8
purified enzyme, at pH 8.0 and 25°C
581
pH 7.5, 25°C
7.1
-
purified enzyme, substrate decylubiquinone, pH 7.0, 40°C
71.4
at 40°C, pH 7.4