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

BRENDA support

1.2.7.1: pyruvate synthase

This is an abbreviated version!
For detailed information about pyruvate synthase, go to the full flat file.

Word Map on EC 1.2.7.1

Reaction

pyruvate
+
CoA
 +
oxidized ferredoxin
=
acetyl-CoA
 +
CO2
 +
reduced ferredoxin
 + 2 H+

Synonyms

2-ketobutyrate synthase, 2-oxobutyrate (methylviologen), 2-oxobutyrate synthase (benzylviologen), 2-oxobutyrate-ferredoxin oxidoreductase, alpha-ketobutyrate synthase, alpha-ketobutyrate-ferredoxin oxidoreductase, AP120, Ape2126/2128, bifunctional pyruvate decarboxylase/pyruvate ferredoxin oxidoreductase, EC 1.2.7.2, Moth_0064, NifJ1, OFOR, PFO, PFO A, PFOR, Pfor1, PforA, PFR, PFR1, POR, PorEDABG, pyruvate ferredoxin oxidoreductase, pyruvate-ferredoxin oxidoreductase, pyruvate:Fd oxidoreductase, pyruvate:ferredoxin oxidoreductase, pyruvate:ferredoxin oxidoreductase A, synthase, 2-oxobutyrate, TKV_c04340, Tsac_0046, TTE0445

ECTree

     1 Oxidoreductases
         1.2 Acting on the aldehyde or oxo group of donors
             1.2.7 With an iron-sulfur protein as acceptor
                1.2.7.1 pyruvate synthase

Oxidation Stability

Oxidation Stability on EC 1.2.7.1 - pyruvate synthase

Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
OXIDATION STABILITY
ORGANISM
UNIPROT
LITERATURE
25°C, half-life in presence of air 70 min
-
735659
activity is rapidly lost under aerobic conditions
-
763539
both pyruvate decarboxylase and pyruvate ferredoxin oxidoreductase activity are extremely oxygen sensitive, 50% loss of activity upon exposure to air at room temperature within 15 min
oxygen-sensitive enzyme, the t1/2 for the enzyme activity in 50 mM Tris-HCl, pH 7.8 containing 2 mM sodium dithionite and 2 mM DTT is approximately 30 min
726840
the enzyme is efficiently protected when cells are exposed to air or H2O2
-
725463
the enzyme is extremely oxygen sensitive, losing 90% of its activity upon exposure to air for 1 h at 0°C
P80521; P80522; P80523; P80524
744835
the enzyme is inactivated by O2. Less than 50% of the original activity remains when the protein (0.23 mg/ml in 50 mM Tris/HCl pH 7.5) is exposed to air for 80 min at 25°C. Attempts to reactivate the enzyme by anoxic incubation in the presence of 2 mM dithiothreitol fail
-
288449
the enzyme is inactivated by oxygen, which makes it difficult to purify the enzyme under oxic conditions. The enzyme can be stabilized when 0.1% Triton X-100 is added to the purification buffers
-
288436
the enzyme is very sensitive to O2. Following incubation in air at 2°C for 40 min, about 60% of enzyme activity is lost. The half-life is 5.2 min when the purified enzyme is exposed to air in an ice bath. After inactivation of the purified enzyme by oxygen, activity is not restored byreplacing the oxygen with nitrogen and adding 0.01 mM dithionite no activity is lost after dialysis of extract in a basic buffer containing 20 mM potassium Tricine, pH 8.6, 5 mM MgCl2, 0.5 mM dithiothreitol, 0.1 mM thiamine diphosphate, and 10% glycerol
654391
the enzyme shows high O2-sensitivity
-
740173
when the recombinant enzyme (in 50 mM Tricine, pH 8.0) is exposed to air for 1 h on ice, a drastic loss of activity is observed
-
726231