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Metals such as iron, zinc, and copper all perform important roles in many of the enzymatic reactions that fuel the body’s metabolism. For instance, ions such as Fe2+ can bind to the hemoglobin and myoglobin protein to help transport oxygen to organs in the body. Other metals like magnesium and copper act to stabilize the shapes of enzymes. However, there are some metal ions that are highly toxic in excessive amounts. Thus, the body exerts strict control to assure that only one or two free metal atoms are present inside an individual cell.
In trigger and control mechanisms
Sodium-Potassium pump generating a concentration gradient
Lewis Acid Behavior
Redox reactions and General Compounds
Toxic metals can hinder important enzyme functions.