7YMM

PSII-Pcb Tetramer of Acaryochloris Marina

これはPDB形式変換不可エントリーです。

7YMM の概要

• エントリーDOI: 10.2210/pdb7ymm/pdb
• EMDBエントリー: 33933
• 分子名称: Photosystem II protein D1 2, Photosystem II reaction center protein L, Photosystem II reaction center protein M, ... (32 entities in total)
• 機能のキーワード: photosystem ii, pcb, photosynthesis
• 由来する生物種: Acaryochloris marina MBIC11017; 詳細
• タンパク質・核酸の鎖数: 80
• 化学式量合計: 2158030.70

構造登録者

Shen, L.L.,Gao, Y.Z.,Wang, W.D.,Zhang, X.,Shen, J.R.,Wang, P.Y.,Han, G.Y. (登録日: 2022-07-28, 公開日: 2023-08-16, 最終更新日: 2024-09-04)

主引用文献

Shen, L.,Gao, Y.,Tang, K.,Qi, R.,Fu, L.,Chen, J.H.,Wang, W.,Ma, X.,Li, P.,Chen, M.,Kuang, T.,Zhang, X.,Shen, J.R.,Wang, P.,Han, G.
Structure of a unique PSII-Pcb tetrameric megacomplex in a chlorophyll d -containing cyanobacterium.
Sci Adv, 10:eadk7140-eadk7140, 2024

PubMed Abstract: is a unique cyanobacterium using chlorophyll (Chl ) as its major pigment and thus can use far-red light for photosynthesis. Photosystem II (PSII) of associates with a number of prochlorophyte Chl-binding (Pcb) proteins to act as the light-harvesting system. We report here the cryo-electron microscopic structure of a PSII-Pcb megacomplex from at a 3.6-angstrom overall resolution and a 3.3-angstrom local resolution. The megacomplex is organized as a tetramer consisting of two PSII core dimers flanked by sixteen symmetrically related Pcb proteins, with a total molecular weight of 1.9 megadaltons. The structure reveals the detailed organization of PSII core consisting of 15 known protein subunits and an unknown subunit, the assembly of 4 Pcb antennas within each PSII monomer, and possible pathways of energy transfer within the megacomplex, providing deep insights into energy transfer and dissipation mechanisms within the PSII-Pcb megacomplex involved in far-red light utilization.

PubMed: 38394197
DOI: 10.1126/sciadv.adk7140

実験手法

ELECTRON MICROSCOPY (3.6 Å)