6A2W

Crystal structure of fucoxanthin chlorophyll a/c complex from Phaeodactylum tricornutum

6A2W の概要

• エントリーDOI: 10.2210/pdb6a2w/pdb
• 分子名称: Protein fucoxanthin chlorophyl a/c protein, 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE, octyl 1-thio-beta-D-glucopyranoside, ... (13 entities in total)
• 機能のキーワード: photosynthesis, light-harvesting, fucoxanthin, diatom
• 由来する生物種: Phaeodactylum tricornutum CCAP 1055/1
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 34509.09

構造登録者

Wang, W.,Yu, L.J.,Kuang, T.Y.,Shen, J.R. (登録日: 2018-06-13, 公開日: 2019-02-06, 最終更新日: 2024-03-27)

主引用文献

Wang, W.,Yu, L.J.,Xu, C.,Tomizaki, T.,Zhao, S.,Umena, Y.,Chen, X.,Qin, X.,Xin, Y.,Suga, M.,Han, G.,Kuang, T.,Shen, J.R.
Structural basis for blue-green light harvesting and energy dissipation in diatoms.
Science, 363:-, 2019

PubMed Abstract: Diatoms are abundant photosynthetic organisms in aquatic environments and contribute 40% of its primary productivity. An important factor that contributes to the success of diatoms is their fucoxanthin chlorophyll a/c-binding proteins (FCPs), which have exceptional light-harvesting and photoprotection capabilities. Here, we report the crystal structure of an FCP from the marine diatom , which reveals the binding of seven chlorophylls (Chls) a, two Chls c, seven fucoxanthins (Fxs), and probably one diadinoxanthin within the protein scaffold. Efficient energy transfer pathways can be found between Chl a and c, and each Fx is surrounded by Chls, enabling the energy transfer and quenching via Fx highly efficient. The structure provides a basis for elucidating the mechanisms of blue-green light harvesting, energy transfer, and dissipation in diatoms.

PubMed: 30733387
DOI: 10.1126/science.aav0365

実験手法

X-RAY DIFFRACTION (1.8 Å)