Cytochrome c oxidases: polypeptide composition, role of subunits, and location of active metal centers |
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| Authors: | A Azzi M Müller |
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| Institution: | Institut für Biochemie und Molekularbiologie, Universit?t Bern, Switzerland. |
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| Abstract: | The general structure of the enzyme, its polypeptide composition, and a proposal for a rational nomenclature are discussed. The mitochondrially coded and bacterial cytochrome c oxidase subunits have been analyzed with more attention focused on elucidating the number of metals present in the enzyme and the ligands available for their coordination. The picture of a 2 Cu/2 Fe enzyme has been compared with that of a 3 Cu/2 Fe enzyme and a new model is proposed for the location of the metal centers in the enzyme. |
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