Name: Urate: oxygen oxidoreductase
Appearance: white amorphous powder lyophilized
Activity: Grade II, 1.5U/mg-solid or more
Contaminants: Catalase ≤ 1.0%
Stabilizers: Borate, EDTA, nonionic detergents
Stability: Stable at – 20 °C for at least 12 months
Molecular weight: approx. 150,000
Structure: 4 subunits per molecule
Isoelectric point: 4.7
Michaelis constant: 1.36×10-5 M (Uric acid)
Inhibitors: Ag+, Hg2+
Optimum pH: 8.5
Optimum temperature: 45 °C
pH Stability: pH 6.0-9.5 (25 °C, 20hr)
Thermal stability: below 60 °C (pH 8.0, 10min)
EC # 1.7.3.3
Used in In Vitro Diagnostic tests and Life Sciences, Research & Development
< -20ºC
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