规格

Appearance	yellowish green to brown lyophilizate
Activity	≧12,000 U/mg
Stabilizer	lactitol
Storage condition	below -20℃

特性

Molecular weight	ca. 240 kDa (gel filtration)
Structure	4 identical tetrahedrally arranged subunits of ca. 60 kDa each, 4 ferriprotoporphyrin groups per mole of enzyme
pH Optimum	6.5–8.0
pH Stability	4.0–9.5
Optimum temperature	ca. 30℃
Thermal stability	below 55℃
Inhibitors	azide, cyanide, cyanogenbromide, hydroxylamine, ascorbate,nitrite, fluoride, acetate, formate, ethanol, methanol

应用

The enzyme is useful for removal of hydrogen peroxide in clinical analysis.

参考文献

Nicholls, P. and Schonbaum, G. R., “The Enzyme,” Vol. 8 (2nd ed.), Academic Press, New York and London, 1963, pp. 147–225. Bergmeyer, H. U., “Methods of Enzymatic Analysis,” Vol. 3 (3rd ed.), Verlag Chemie, Weinheim, Germany, 1983, pp. 273–286.