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Literature summary for 1.8.2.1 extracted from

  • Lu, W.P.; Kelly, D.P.
    Properties and role of sulphite:cytochrome c oxidoreductase purified from Thiobacillus versutus (A2) (1984), J. Gen. Microbiol., 130, 1683-1692.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
KCN 2 mM, complete inhibition after 10 min Paracoccus versutus
p-hydroxymercuribenzoate 1 mM, 75% inhibition after 15 min Paracoccus versutus
phosphate noncompetitive Paracoccus versutus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.014
-
sulfite
-
Paracoccus versutus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
44000
-
1 * 44000, SDS-PAGE Paracoccus versutus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
sulfite + ferricytochrome c + H2O Paracoccus versutus the enzyme is involved in oxidation of thiosulfate sulfate + ferrocytochrome c + H+
-
?

Organism

Organism UniProt Comment Textmining
Paracoccus versutus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Paracoccus versutus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
128
-
-
Paracoccus versutus

Storage Stability

Storage Stability Organism
-20°C, no loss of activity after several months Paracoccus versutus
4°C, 20% loss of activity after 1 month Paracoccus versutus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfite + ferricytochrome c + H2O
-
Paracoccus versutus sulfate + ferrocytochrome c + H+
-
?
sulfite + ferricytochrome c + H2O the enzyme is involved in oxidation of thiosulfate Paracoccus versutus sulfate + ferrocytochrome c + H+
-
?

Subunits

Subunits Comment Organism
monomer 1 * 44000, SDS-PAGE Paracoccus versutus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
20
-
1 week, about 35% loss of activity Paracoccus versutus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
-
Paracoccus versutus

pH Range

pH Minimum pH Maximum Comment Organism
7.3 9.5 90% of maximal activity at pH 7.3 and 9.5 Paracoccus versutus

Cofactor

Cofactor Comment Organism Structure
cytochrome c-551 intimately associated with the enzyme Paracoccus versutus

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
12
-
phosphate
-
Paracoccus versutus