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Fast electron transfer from cytochrome c6 and plastocyanin to photosystem I of Chlamydomonas reinhardtii requires PsaF.
Journal article

Fast electron transfer from cytochrome c6 and plastocyanin to photosystem I of Chlamydomonas reinhardtii requires PsaF.

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  • 1997-05-27
Published in:
  • Biochemistry. - 1997
Animals
Chlamydomonas reinhardtii
Cross-Linking Reagents
Cytochromes
Cytochromes f
Electron Transport
Membrane Proteins
Mutation
Oxidation-Reduction
Photosynthetic Reaction Center Complex Proteins
Photosystem I Protein Complex
Plastocyanin
Protozoan Proteins
English To study the function of the PsaF subunit of photosystem I (PSI), the interactions between plastocyanin or cytochrome c6 and PSI isolated from wild-type and a PsaF-deficient mutant of Chlamydomonas reinhardtii have been examined using cross-linking techniques and flash absorption spectroscopy. We show that efficient electron transfer from both plastocyanin and cytochrome c6 to PSI depends on PsaF. A remarkable feature of the PSI complex of C. reinhardtii is that both plastocyanin and cytochrome c6 reduce P700+ with first-order kinetics and a half-time of 3 micros, which is unique among photosynthetic organisms examined.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://folia.unifr.ch/global/documents/33196
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