2020年1月
Structural basis for the adaptation and function of chlorophyll f in photosystem I
NATURE COMMUNICATIONS
- 巻
- 11
- 号
- 1
- 開始ページ
- 238
- 終了ページ
- 238
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41467-019-13898-5
- 出版者・発行元
- NATURE PUBLISHING GROUP
Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first found in a cyanobacterium Halomicronema hongdechloris. The location and function of Chl f in photosystems are not clear. Here we analyzed the high-resolution structures of photosystem I (PSI) core from H. hongdechloris grown under white or far-red light by cryo-electron microscopy. The structure showed that, far-red PSI binds 83 Chl a and 7 Chl f, and Chl f are associated at the periphery of PSI but not in the electron transfer chain. The appearance of Chl f is well correlated with the expression of PSI genes induced under far-red light. These results indicate that Chl f functions to harvest the far-red light and enhance uphill energy transfer, and changes in the gene sequences are essential for the binding of Chl f.
- リンク情報
-
- DOI
- https://doi.org/10.1038/s41467-019-13898-5
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/31932639
- PubMed Central
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6957486
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000511916800016&DestApp=WOS_CPL
- ID情報
-
- DOI : 10.1038/s41467-019-13898-5
- ISSN : 2041-1723
- PubMed ID : 31932639
- PubMed Central 記事ID : PMC6957486
- Web of Science ID : WOS:000511916800016