Xanthine Oxidase, Buttermilk Native xanthine oxidase from buttermilk. Complex metalloprotein that catalyzes oxidative hydroxylation of a variety of aromatic heterocycles and simple aldehydes. Catalyzes the oxidation of xanthine to uric acid. 产品信息 Form Liquid Formulation Crystalline suspension in 60% ammonium sulfate. Molar mass 275000 Do not freeze 是的 Specific activity ≥0.5 unit/mg protein Unit definition One unit is defined as the amount of enzyme that will convert 1.0 µmol of xanthine to uric acid per min at 25°C, pH 7.5. Contaminants lactoperoxidase: none pH value optimum 4.6 PI 5.3 - 5.4 EC number 1.1.3.22 RTECS RQ8455000 CAS number 9002-17-9 商店和运输信息 Storage +2°C to +8°C Ship Blue Ice Only Standard Handling Canadian export regulations Due to the country and/or U.S. state of origin of the animal material used in this product, this product may not be exported to Canada.