An enzyme that splits hydrogen peroxide to yield oxygen and water; an important part of the body’s antioxidant defences.
An agent that participates in a chemical reaction, speeding the rate, but itself remains unchanged.
An enzyme. A substance that undergoes no chemical change itself, but which accelerates or affects chemical reactions.
An enzyme that catalyzes the very rapid decomposition of hydrogen peroxide to water and oxygen. Catalase is in the group of enzymes known as metalloenzymes because it requires the presence of a metal in order to be catalytically active. The metal (known as a cofactor) is, in the case of catalase, iron. Found in both plants and animals.
An enzyme present in the blood and liver which catalyses the breakdown of hydrogen peroxide into water and oxygen.
An enzyme which catalyzes the conversion of peroxide to water and oxygen; this is a key enzyme in the cytoplasmic free radical suppression system.
An enzyme, present in most aerobic bacteria, with the property of decomposing hydrogen (or other) peroxides which may otherwise exert a toxic effect on cell growth.
An enzyme present in almost all cells that catalyzes the decomposition of hydrogen peroxide to water and oxygen.