| Item type |
itemtype_ver1(1) |
| 公開日 |
2022-10-12 |
| タイトル |
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|
タイトル |
Theoretical Model of the Far-Red-Light-Adapted Photosystem I Reaction Center of Cyanobacterium Acaryochloris marina Using Chlorophyll d and the Effect of Chlorophyll Exchange |
|
言語 |
en |
| 著者 |
Kimura, Akihiro
Kitoh-Nishioka, Hirotaka
Aota, Toshimichi
Hamaguchi, Tasuku
Yonekura, Koji
Kawakami, Keisuke
Shinzawa-Itoh, Kyoko
Inoue-Kashino, Natsuko
Ifuku, Kentaro
Yamashita, Eiki
Kashino, Yasuhiro
Itoh, Shigeru
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [The Journal of Physical Chemistry B], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-EWBQVS9DZN7NDBRNT6UZ].” |
| 内容記述 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
A theoretical model of the far-red-light-adapted photosystem I (PSI) reaction center (RC) complex of a cyanobacterium, Acaryochloris marina (AmPSI), was constructed based on the exciton theory and the recently identified molecular structure of AmPSI by Hamaguchi et al. (Nat. Commun., 2021, 12, 2333). A. marina performs photosynthesis under the visible to far-red light (400–750 nm), which is absorbed by chlorophyll d (Chl-d). It is in contrast to the situation of all the other oxygenic photosynthetic processes of cyanobacteria and plants, which contains chlorophyll a (Chl-a) that absorbs only 400–700 nm visible light. AmPSI contains 70 Chl-d, 1 Chl-d′, 2 pheophytin a (Pheo-a), and 12 carotenoids in the currently available structure. A special pair of Chl-d/Chl-d′ acts as the electron donor (P740) and two Pheo-a act as the primary electron acceptor A0 as the counterparts of P700 and Chl-a, respectively, of Chl-a-type PSIs. The exciton Hamiltonian of AmPSI was constructed considering the excitonic coupling strength and site energy shift of individual pigments using the Poisson-TrESP (P-TrESP) and charge density coupling (CDC) methods. The model was constructed to fit the experimentally measured spectra of absorption and circular dichroism (CD) spectra during downhill/uphill excitation energy transfer processes. The constructed theoretical model of AmPSI was further compared with the Chl-a-type PSI of Thermosynechococcus elongatus (TePSI), which contains only Chl-a and Chl-a′. The functional properties of AmPSI and TePSI were further examined by the in silico exchange of Chl-d by Chl-a in the models. |
|
言語 |
en |
| 出版者 |
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出版者 |
ACS Publications |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1021/acs.jpcb.2c00869 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1520-6106 |
| 書誌情報 |
en : The Journal of Physical Chemistry B
巻 126,
号 22,
p. 4009-4021,
発行日 2022-06-09
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| ファイル公開日 |
|
|
日付 |
2023-06-09 |
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日付タイプ |
Available |
main14.pdf (14 MB)
