WEKO3
アイテム
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PsaK2 SUBUNIT IN PHOTOSYSTEM I IS INVOLVED IN STATE TRANSITION UNDER HIGH-LIGHT CONDITION IN THE CYANOBACTERIUM Synechocystis SP. PCC 6803
https://sucra.repo.nii.ac.jp/records/12515
https://sucra.repo.nii.ac.jp/records/125154468692b-387a-4b12-86f3-a577ce1d3055
名前 / ファイル | ライセンス | アクション |
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A1001422.pdf (670.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-03-08 | |||||
タイトル | ||||||
タイトル | PsaK2 SUBUNIT IN PHOTOSYSTEM I IS INVOLVED IN STATE TRANSITION UNDER HIGH-LIGHT CONDITION IN THE CYANOBACTERIUM Synechocystis SP. PCC 6803 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
日原, 由香子
× 日原, 由香子 |
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著者 ローマ字 | ||||||
Hihara, Yukako | ||||||
著者 ローマ字 | ||||||
Sonoike, Kintake | ||||||
著者 ローマ字 | ||||||
Fujimori, Tamaki | ||||||
著者 所属 | ||||||
埼玉大学大学院理工学研究科 | ||||||
著者 所属(別言語) | ||||||
Graduate School of Science and Engineering, Saitama University | ||||||
書誌情報 |
Journal of biological chemistry 巻 280, 号 23, p. 22191-22197, 発行日 2005 |
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年月次 | ||||||
2005-6 | ||||||
出版者名 | ||||||
出版者 | American Society for Biochemistry and Molecular Biology | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00219258 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1074/jbc.M500369200 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In order to avoid the photodamage, cyanobacteria regulate the distribution of light energy absorbed by phycobilisome antenna either to photosystem II (PSII) or to photosystem I (PSI) upon high-light acclimation by the process so called state transition. We found that an alternative PSI subunit, PsaK2 (sll0629 gene product), is involved in this process in the cyanobacterium Synechocystis sp. PCC 6803. Examination of the subunit composition of the purified PSI reaction center complexes revealed that PsaK2 subunit was absent in the PSI complexes under low-light condition, but was incorporated into the complexes during acclimation to high light. The growth of the psaK2 mutant on solid medium was inhibited under high-light condition. We determined the photosynthetic characteristics of the wild type strain and the two mutants, the psaK1 (ssr0390) mutant and the psaK2 mutant, using pulse amplitude modulation (PAM) fluorometer. Non-photochemical quenching (qN), which reflects the energy transfer from phycobilisome to PSI in cyanobacteria, was higher in high-light grown cells than in low-light grown cells, both in the wild type and the psaK1 mutant. However, this change of qN during acclimation to high light was not observed in the psaK2 mutant. Thus, PsaK2 subunit is involved in the energy transfer from phycobilisome to PSI under high-light condition. The role of PsaK2 in state transition under high-light condition was also confirmed by chlorophyll fluorescence emission spectra determined at 77 K. The results suggest that PsaK2-dependent state transition is essential for the growth of this cyanobacterium under high-light condition. | |||||
注記 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Copyright notice. c2002 Journal of Biological Chemistry. All rights reserved. Source published by American Physical Society. | |||||
版 | ||||||
[著者版] | ||||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | text | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
作成日 | ||||||
日付 | 2007-03-05 | |||||
日付タイプ | Created | |||||
アイテムID | ||||||
A1001422 |