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FEBS Lett. 1989 Mar 13;245(1-2):271-3.

Cytochrome c-550 mediates electron transfer from inducible periplasmic c-type cytochromes to the cytoplasmic membrane of Paracoccus denitrificans.

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1
Department of Biochemistry, University of Mississippi Medical Center, Jackson 39216-4505.

Abstract

Electron transfer from periplasmic cytochromes c to the membrane-bound respiratory chain has been studied with the isolated cytochromes and membrane preparations from Paracoccus denitrificans. When reduced cytochromes were incubated with spheroplasts only the constitutive cytochrome c-550 was rapidly oxidized. The inducible cytochromes c-551i and c-553i were not oxidized at appreciable rates. Cytochrome c-550 was able to mediate the transfer of electrons from either cytochrome c-551i or cytochrome c-553i to the membrane preparation.

PMID:
2538362
DOI:
10.1016/0014-5793(89)80235-2
[Indexed for MEDLINE]
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