4XK8

Crystal structure of plant photosystem I-LHCI super-complex at 2.8 angstrom resolution

4XK8 の概要

• エントリーDOI: 10.2210/pdb4xk8/pdb
• 分子名称: Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I reaction center subunit IX, Photosystem I reaction center subunit X psaK, ... (29 entities in total)
• 機能のキーワード: photosynthesis, photosystem i, plant lhci-psi supercomplex
• 由来する生物種: Pisum sativum (Garden pea); 詳細
• タンパク質・核酸の鎖数: 32
• 化学式量合計: 1046378.51

構造登録者

Suga, M.,Qin, X.,Kuang, T.,Shen, J.R. (登録日: 2015-01-10, 公開日: 2015-06-10, 最終更新日: 2024-11-20)

主引用文献

Qin, X.,Suga, M.,Kuang, T.,Shen, J.R.
Structural basis for energy transfer pathways in the plant PSI-LHCI supercomplex
Science, 348:989-995, 2015

PubMed Abstract: Photosynthesis converts solar energy to chemical energy by means of two large pigment-protein complexes: photosystem I (PSI) and photosystem II (PSII). In higher plants, the PSI core is surrounded by a large light-harvesting complex I (LHCI) that captures sunlight and transfers the excitation energy to the core with extremely high efficiency. We report the structure of PSI-LHCI, a 600-kilodalton membrane protein supercomplex, from Pisum sativum (pea) at a resolution of 2.8 angstroms. The structure reveals the detailed arrangement of pigments and other cofactors—especially within LHCI—as well as numerous specific interactions between the PSI core and LHCI. These results provide a firm structural basis for our understanding on the energy transfer and photoprotection mechanisms within the PSI-LHCI supercomplex.

PubMed: 26023133
DOI: 10.1126/science.aab0214

実験手法

X-RAY DIFFRACTION (2.8 Å)