Cells need protection from any accumulation of hydrogen peroxide. Hydrogen peroxide can cause free radical damage inside cells. Certain enzymes that contain heme can catalyze reactions that neutralize the free radical hydrogen peroxide. Hydrogen peroxide is converted to water and oxygen, as shown in Figure 11-3. In this case, iron in heme acts as an antioxidant.
Figure 11-3 Enzymes containing heme catalyze the conversion of hydrogen peroxide to water and oxygen.
Figure 11-3 Enzymes containing heme catalyze the conversion of hydrogen peroxide to water and oxygen.
More about Iron:
0 comments