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Cytochrome c ‐550 mediates electron transfer from inducible periplasmic c ‐type cytochromes to the cytoplasmic membrane of Paracoccus denitrificans
Author(s) -
Davidson Victor L.,
Kumar M.Arun
Publication year - 1989
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(89)80235-2
Subject(s) - paracoccus denitrificans , cytochrome c , periplasmic space , chemistry , cytoplasm , electron transport chain , cytochrome , electron transfer , biochemistry , photochemistry , mitochondrion , enzyme , gene , escherichia coli
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.