The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin.
Journal
Nature plants
ISSN: 2055-0278
Titre abrégé: Nat Plants
Pays: England
ID NLM: 101651677
Informations de publication
Date de publication:
10 2020
10 2020
Historique:
received:
01
04
2020
accepted:
03
09
2020
pubmed:
7
10
2020
medline:
31
3
2021
entrez:
6
10
2020
Statut:
ppublish
Résumé
The ability of photosynthetic organisms to use sunlight as a sole source of energy is endowed by two large membrane complexes-photosystem I (PSI) and photosystem II (PSII). PSI and PSII are the fundamental components of oxygenic photosynthesis, providing oxygen, food and an energy source for most living organisms on Earth. Currently, high-resolution crystal structures of these complexes from various organisms are available. The crystal structures of megadalton complexes have revealed excitation transfer and electron-transport pathways within the various complexes. PSI is defined as plastocyanin-ferredoxin oxidoreductase but a high-resolution structure of the entire triple supercomplex is not available. Here, using a new cryo-electron microscopy technique, we solve the structure of native plant PSI in complex with its electron donor plastocyanin and the electron acceptor ferredoxin. We reveal all of the contact sites and the modes of interaction between the interacting electron carriers and PSI.
Identifiants
pubmed: 33020607
doi: 10.1038/s41477-020-00779-9
pii: 10.1038/s41477-020-00779-9
doi:
Substances chimiques
Ferredoxins
0
Photosystem I Protein Complex
0
Plastocyanin
9014-09-9
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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