Catalase from Bovine Liver, Natural antioxidant used to study roles of reactive oxygen species in gene expression and apoptosis, Each

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A homotetrameric enzyme that is primarily located in peroxisomes. It is a tetramer consisting of 4 equal subunits with a molecular weight of 60kDa each. Each subunit contains iron bound to a protoheme IX group. The enzyme also strongly binds NADP, which is in close proximity to the heme group (13.7Å apart). Catalase can also react with alkylhydrogen peroxides such as methylperoxide and ethylperoxide and does not require any activator for exhibiting its catalytic activity. Catalase activity is constant over the pH range of 4.0 to 8.5.CAS Number: 9001-05-2EC Number: 232-577-1MDL Number: MFCD00081483Format: Clear, pale yellow solutionSpecific Activity: ∽30,000U/mL; ≥40,000U/mg proteinExtinction Coefficient: 36.5 (276nm)Sterile aqueous solution, miscible in water