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As enzymes are made up of protein, they can be denatured by the means of physical action like due to change in pH, temp. and pressure, or by cemical procedure by acting some enzymes on them they can be denatured. 5 people found this useful.
Catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals). It catalyzes the decomposition of hydrogen peroxide to water and oxygen.atalase 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.