6YAC

Plant PSI-ferredoxin supercomplex

6YAC の概要

• エントリーDOI: 10.2210/pdb6yac/pdb
• 関連するPDBエントリー: 5L8R
• EMDBエントリー: 10746
• 分子名称: Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I reaction center subunit IX, Photosystem I reaction center subunit X psaK, ... (33 entities in total)
• 機能のキーワード: membrane complex, photosystem i, ferredoxin, light harvesting, excitation transfer, photosynthesis
• 由来する生物種: Pisum sativum (Pea); 詳細
• タンパク質・核酸の鎖数: 17
• 化学式量合計: 562539.25

構造登録者

Caspy, I.,Nelson, N.,Shkolnisky, Y.,Klaiman, D.,Sheinker, A. (登録日: 2020-03-12, 公開日: 2020-09-30, 最終更新日: 2025-10-01)

主引用文献

Caspy, I.,Borovikova-Sheinker, A.,Klaiman, D.,Shkolnisky, Y.,Nelson, N.
The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin.
Nat.Plants, 6:1300-1305, 2020

PubMed Abstract: 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.

PubMed: 33020607
DOI: 10.1038/s41477-020-00779-9

実験手法

ELECTRON MICROSCOPY (2.5 Å)