6HQB

Monomeric cyanobacterial photosystem I

6HQB の概要

• エントリーDOI: 10.2210/pdb6hqb/pdb
• 分子名称: Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I reaction center subunit XI, Photosystem I reaction center subunit XII, ... (25 entities in total)
• 機能のキーワード: crystal structure; cyanobacteria; membrane complexes; photosynthesis; photosystem i; synechocystis, photosynthesis
• 由来する生物種: Synechocystis sp. (strain PCC 6803 / Kazusa); 詳細
• タンパク質・核酸の鎖数: 11
• 化学式量合計: 349063.06

構造登録者

Netzer-El, S.Y.,Nelson, N.,Caspy, I. (登録日: 2018-09-24, 公開日: 2019-01-16, 最終更新日: 2025-10-01)

主引用文献

Netzer-El, S.Y.,Caspy, I.,Nelson, N.
Crystal Structure of Photosystem I Monomer From Synechocystis PCC 6803.
Front Plant Sci, 9:1865-1865, 2018

PubMed Abstract: A single histidine addition to the C-terminus of PsaL of sp. PCC 6803 was previously reported by our lab to shift the trimer-to-monomer ratio of PSI in favor of the monomeric form. P700 re-reduction and NADP photo-reduction measurements of the PsaL strain show no effect on PSI activity in comparison to the WT trimeric PSI. Crystal structure of the PsaL monomeric PSI reveals several alterations that occurred in the trimerisation site of PSI, primarily a deformation of the C-terminus of PsaL and loss of chlorophyll a and β-carotene molecules.

PubMed: 30662446
DOI: 10.3389/fpls.2018.01865

実験手法

X-RAY DIFFRACTION (4 Å)