National Natural Science Foundation of China (NSFC)
31770778
中国
National Natural Science Foundation of China (NSFC)
31930064
中国
National Natural Science Foundation of China (NSFC)
31970264
中国
引用
ジャーナル: Mol Plant / 年: 2022 タイトル: Supramolecular assembly of chloroplast NADH dehydrogenase-like complex with photosystem I from Arabidopsis thaliana. 著者: Xiaodong Su / Duanfang Cao / Xiaowei Pan / Lifang Shi / Zhenfeng Liu / Luca Dall'Osto / Roberto Bassi / Xinzheng Zhang / Mei Li / 要旨: Cyclic electron transport/flow (CET/CEF) in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency. A crucial CEF pathway is catalyzed by a membrane- ...Cyclic electron transport/flow (CET/CEF) in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency. A crucial CEF pathway is catalyzed by a membrane-embedded NADH dehydrogenase-like (NDH) complex that contains at least 29 protein subunits and associates with photosystem I (PSI) to form the NDH-PSI supercomplex. Here, we report the 3.9 Å resolution structure of the Arabidopsis thaliana NDH-PSI (AtNDH-PSI) supercomplex. We constructed structural models for 26 AtNDH subunits, among which 11 are unique to chloroplasts and stabilize the core part of the NDH complex. In the supercomplex, one NDH can bind up to two PSI-light-harvesting complex I (PSI-LHCI) complexes at both sides of its membrane arm. Two minor LHCIs, Lhca5 and Lhca6, each present in one PSI-LHCI, interact with NDH and contribute to supercomplex formation and stabilization. Collectively, our study reveals the structural details of the AtNDH-PSI supercomplex assembly and provides a molecular basis for further investigation of the regulatory mechanism of CEF in plants.
名称: NdhT / タイプ: protein_or_peptide / ID: 9 詳細: All Residues in NdhT were modeled as UNK. The real sequence of the entity is: ...詳細: All Residues in NdhT were modeled as UNK. The real sequence of the entity is: MAYATSTYARTSCIILPKIQNGAHFTDNTKAFRRITARRVTRISSQGPTKPPKPSPGVDTRIHWESPDEGWIGGRSDPAKSVDEDKTNLLSDEKFAELIKDSFDSHYQFLGVSTDAHLEEIKSAYRRLSKEYHPDTTSLPLKTASEKFMKLREVYNVLSDEETRRFYDWTLAQEVASRQAEKMRMKLEDPKEQDFRGYESIPDMVDRLGGRNMELSDQAMTALTFDILIVLFAVCCIVFVIVFKDPSY コピー数: 1 / 光学異性体: LEVO