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Updated: Aug 30, 2026

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Published on: March 9, 2014
Tracking the function of the cytochrome c6-like protein in higher plants
Martin Weigel1, Paolo Pesaresi, Dario Leister
1Abteilung für Pflanzenzüchtung und Ertragsphysiologie, Max-Planck-Institut für Züchtungsforschung, Carl-von-Linné Weg 10, D-50829, Köln, Germany.
Abstract:
The contention that plastocyanin is the only mobile electron donor to photosystem I in higher plants was recently shaken by the discovery of a cytochrome c(6)-like protein in Arabidopsis and other flowering plants. However, the genetic and biochemical data presented in support of the idea that the cytochrome c(6) homologue can replace plastocyanin have now been challenged by two complementary studies. This re-opens the debate on the real function(s) of cytochrome c in the chloroplasts of higher plants.
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