Catalog # or name ...
Catalase is a common enzyme found in nearly all living organisms, where it functions to catalyze the decomposition of hydrogen peroxide to water and oxygen. Catalase has one of the highest turnover numbers of all enzymes; one molecule of catalase can convert millions of molecules of hydrogen peroxide to water and oxygen per second. Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long. It contains four porphyrin heme (iron) groups that allow the enzyme to react with the hydrogen peroxide. The optimum pH for catalase is approximately 7, while the optimum temperature varies by species.
≥ 10KU/mg protein
2 H2O2 = O2 + 2 H2O
hydrogen-peroxide:hydrogen-peroxide oxidoreductase; equilase; caperase; optidase; catalase-peroxidase; CAT.
One unit decomposes one micromole of H2O2 per min at pH 7.0 at 25℃.
247kDa (Gel filtration)
5.0~9.0 (25℃, 20hr)
< 40℃ (pH7.0, 20min)
The enzyme is diluted with 50mM potassium phosphate buffer, pH 7.0 for activity assay.
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