Beschreibung:
<p>Metallic elements, whose chemistries have been viewed traditionally as inorganic, play central roles in catalysis by metallo-enzymes and in energy transduction in vivo. Zinc ion is among the most abundant occurring in enzymes, especially in those promoting substitution reactions, and its role is illustrated with the example of carboxypeptidase A and its biomimics. Oxidation reduction chemistry is controlled in many organisms by heme proteins in which iron is the key element. Cytochromes P450 are discussed to illustrate the roles of the heme proteins. Essential elements of coordination chemistry, and of iron and heme protein chemistry are presented to provide a basis for understanding.</p>