A new function for an old cytochrome?

Fernando P. Molina-Heredia, Jrgen Wastl, José A. Navarro, Derek S. Bendall, Manuel Hervás, Christopher J. Howe and Miguel A. De la Rosa ()
Additional contact information
Fernando P. Molina-Heredia: Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla y Consejo Superior de Investigaciones Científicas, Centro Isla de la Cartuja
Jrgen Wastl: University of Cambridge
José A. Navarro: Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla y Consejo Superior de Investigaciones Científicas, Centro Isla de la Cartuja
Derek S. Bendall: University of Cambridge
Manuel Hervás: Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla y Consejo Superior de Investigaciones Científicas, Centro Isla de la Cartuja
Christopher J. Howe: University of Cambridge
Miguel A. De la Rosa: Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla y Consejo Superior de Investigaciones Científicas, Centro Isla de la Cartuja

Nature, 2003, vol. 424, issue 6944, 33-34

Abstract: Abstract In many cyanobacteria and algae, cytochrome c6 transports electrons between the cytochrome bf complex and photosystem I, replacing plastocyanin when copper is deficient. Higher plants, however, were thought to lack cytochrome c6 (refs 1,2) until the existence of a modified form in several species was inferred from genomic evidence3. By measuring oxygen evolution with inside-out thylakoids, Gupta et al. inferred that heterologously expressed Arabidopsis cytochrome c6 can replace plastocyanin from Synechocystis or Arabidopsis in reconstitution experiments in vitro4. From structural and kinetic evidence, however, we find that Arabidopsis cytochrome c6 cannot carry out the same function as Arabidopsis plastocyanin or as cytochrome c6 from the alga Monoraphidium braunii. This suggests that cytochrome c6 in higher plants may have lost its original primitive function in photosynthesis.

Date: 2003
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/424033b Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:424:y:2003:i:6944:d:10.1038_424033b

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/424033b

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().