Xanthine Oxidase microbial, lyophilized powder, >=7 units/mg solid

Stock Code: 3581531
Manufacturer Part No: X2252-25UN
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Application


This enzyme is useful for enzymatic determination of inorganic phosphorus, 5′-nucleotidase and adenosine deaminase when coupled with Purine-nucleoside phosphorylase (PNP-301) and uricase (UAO-201, UAO-211).


Biochem/physiol Actions


Also contains proteolytic activity.


General description


Allopurinol is a synthetic drug show to inhibit xanthine oxidase.


Packaging


25, 100 units in glass bottle


Physical form


Lyophilized powder containing BSA and sodium glutamate as stabilizers


Physical properties


Inhibitors: Reducing agents, Hg++, Ag+,MIAOptimum pH: 7.5 - 8.0 Optimum temperature: 65oCpH Stability: pH 6.5 - 9.0 (25oC, 15hr) Thermal stability: below 55oC (pH 8.0, 30min)


Unit Definition


One unit will convert 1.0 µmole of xanthine to uric acid per min at pH 7.5 at 25 °C. Approx. 50% of the activity is obtained with hypoxanthine as substrate.

Quality Level200
ManufacturerSIGMA-ALDRICH
Storage Temp.−20°C
Formlyophilized powder

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