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. 1978 Dec;75(12):5908-11.
doi: 10.1073/pnas.75.12.5908.

Resolution of cytochrome oxidase into two component complexes

M Fry, H Vande Zande, D E Green

Resolution of cytochrome oxidase into two component complexes

M Fry et al. Proc Natl Acad Sci U S A. 1978 Dec.

Abstract

Cytochrome c oxidase (ferrocytochrome c: oxygen oxidoreductase, EC 1.9.3.1) has been resolved into a pair of complexes of unequal molecular weight. The larger complex (electron transfer complex) contains exclusively the oxidation-reduction proteins characteristic of cytochrome oxidase; the smaller complex (ion transfer complex) shows exclusively the capability for cation-dependent induction of the fluorescence of 8-anilino-1-naphthalenesulfonic acid--a capability demonstrable in preparations of cytochrome oxidase. The duplex nature of cytochrome oxidase has important implications for the mechanism of energy coupling.

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