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Literature summary for 1.17.3.2 extracted from

  • Machida, Y.; Nakanishi, T.
    Purification and properties of xanthine oxidase from Enterobacter cloacae (1981), Agric. Biol. Chem., 45, 425-432.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Ag+
-
Enterobacter cloacae
ascorbic acid
-
Enterobacter cloacae
Co2+
-
Enterobacter cloacae
Cu2+
-
Enterobacter cloacae
Fe3+
-
Enterobacter cloacae
H2O2
-
Enterobacter cloacae
p-chloromercuribenzoate
-
Enterobacter cloacae

Metals/Ions

Metals/Ions Comment Organism Structure
Iron iron-molybdenum protein Enterobacter cloacae
Molybdenum an iron-molybdenum protein Enterobacter cloacae

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
69000
-
2 * 69000, SDS-PAGE Enterobacter cloacae
128000
-
gel filtration Enterobacter cloacae

Organism

Organism UniProt Comment Textmining
Enterobacter cloacae
-
KY 3074
-
Enterobacter cloacae KY 3074
-
KY 3074
-

Posttranslational Modification

Posttranslational Modification Comment Organism
additional information
-
Enterobacter cloacae
proteolytic modification
-
Enterobacter cloacae

Purification (Commentary)

Purification (Comment) Organism
-
Enterobacter cloacae

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
15.2
-
-
Enterobacter cloacae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
6-mercaptopurine + H2O + O2 4.4% of activity with xanthin Enterobacter cloacae 6-mercapto-7,9-dihydropurin-8-one + H2O2
-
?
adenine + H2O + O2 no activity with adenine Enterobacter cloacae 6-amino-7,9-dihydropurin-8-one + H2O2
-
?
guanine + H2O + O2 53.3% of activity with xanthin Enterobacter cloacae 2-amino-7,9-dihydro-1H-purine-6,8-dione + H2O2
-
?
hypoxanthine + 2 H2O + 2 O2 92.3% of activity with xanthin Enterobacter cloacae urate + 2 H2O2
-
?
hypoxanthine + 2 H2O + 2 O2 92.3% of activity with xanthin Enterobacter cloacae KY 3074 urate + 2 H2O2
-
?
purine + H2O + O2 purine and derivatives Enterobacter cloacae 7,9-dihydropurin-8-one + H2O2
-
?
purine + H2O + O2 23.3% of activity with xanthine Enterobacter cloacae 7,9-dihydropurin-8-one + H2O2
-
?
purine + H2O + O2 purine and derivatives Enterobacter cloacae KY 3074 7,9-dihydropurin-8-one + H2O2
-
?
xanthine + H2O + O2 electron acceptor O2 Enterobacter cloacae uric acid + H2O2
-
?
xanthine + H2O + O2 electron acceptor ferricyanide Enterobacter cloacae uric acid + H2O2
-
?
xanthine + H2O + O2 electron acceptor 2,6-dichlorophenolindophenol Enterobacter cloacae uric acid + H2O2
-
?
xanthine + H2O + O2 electron acceptor O2 Enterobacter cloacae KY 3074 uric acid + H2O2
-
?
xanthine + H2O + O2 electron acceptor ferricyanide Enterobacter cloacae KY 3074 uric acid + H2O2
-
?
xanthine + H2O + O2 electron acceptor 2,6-dichlorophenolindophenol Enterobacter cloacae KY 3074 uric acid + H2O2
-
?

Subunits

Subunits Comment Organism
dimer 2 * 69000, SDS-PAGE Enterobacter cloacae

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
-
Enterobacter cloacae
37
-
assay at Enterobacter cloacae

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
5
-
5°C: about 10% of activity maximum, 60°C: about 50% of activity maximum Enterobacter cloacae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
pH 6.2-6.8, 30 min, stable Enterobacter cloacae
70
-
30 min, complete loss of activity Enterobacter cloacae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.1
-
-
Enterobacter cloacae

pH Range

pH Minimum pH Maximum Comment Organism
5 9 pH 5.0: about 10% of activity maximum, pH 9.0: about 25% of activity maximum Enterobacter cloacae

pH Stability

pH Stability pH Stability Maximum Comment Organism
6.2 6.8 60°C, 30 min Enterobacter cloacae

Cofactor

Cofactor Comment Organism Structure
FAD flavoprotein Enterobacter cloacae