7COY

Structure of the far-red light utilizing photosystem I of Acaryochloris marina

これはPDB形式変換不可エントリーです。

7COY の概要

• エントリーDOI: 10.2210/pdb7coy/pdb
• EMDBエントリー: 30420
• 分子名称: Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I protein PsaL, Photosystem I protein PsaM, ... (20 entities in total)
• 機能のキーワード: photosynthesis, photosystem i, acaryochloris marina, light-harvesting, chlorophyll d
• 由来する生物種: Acaryochloris marina MBIC11017; 詳細
• タンパク質・核酸の鎖数: 33
• 化学式量合計: 971743.01

構造登録者

Kawakami, K.,Yonekura, K.,Hamaguchi, T.,Kashino, Y.,Shinzawa-Itoh, K.,Inoue-Kashino, N.,Itoh, S.,Ifuku, K.,Yamashita, E. (登録日: 2020-08-05, 公開日: 2021-03-31, 最終更新日: 2021-05-05)

主引用文献

Hamaguchi, T.,Kawakami, K.,Shinzawa-Itoh, K.,Inoue-Kashino, N.,Itoh, S.,Ifuku, K.,Yamashita, E.,Maeda, K.,Yonekura, K.,Kashino, Y.
Structure of the far-red light utilizing photosystem I of Acaryochloris marina.
Nat Commun, 12:2333-2333, 2021

PubMed Abstract: Acaryochloris marina is one of the cyanobacterial species that can use far-red light to drive photochemical reactions for oxygenic photosynthesis. Here, we report the structure of A. marina photosystem I (PSI) reaction center, determined by cryo-electron microscopy at 2.58 Å resolution. The structure reveals an arrangement of electron carriers and light-harvesting pigments distinct from other type I reaction centers. The paired chlorophyll, or special pair (also referred to as P740 in this case), is a dimer of chlorophyll d and its epimer chlorophyll d'. The primary electron acceptor is pheophytin a, a metal-less chlorin. We show the architecture of this PSI reaction center is composed of 11 subunits and we identify key components that help explain how the low energy yield from far-red light is efficiently utilized for driving oxygenic photosynthesis.

PubMed: 33879791
DOI: 10.1038/s41467-021-22502-8

実験手法

ELECTRON MICROSCOPY (2.5 Å)