1. Peroxidase A group of enzyme s which remove hydrogen peroxide (H2O2) from the cell by turning it into water. Hydrogen peroxide is a very harmful radical that, if left alone, will cause extensive damage to DNA . These enzymes are thus very important to all living things which use oxygen ( aerobe s) because the use of oxygen in respiration often results in the formation of hydrogen peroxide as a waste product. (The formation of hydrogen peroxide is also a major reason why obligate anaerobes find oxygen to be a poison.)
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