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ID 52503
フルテキストURL
著者
Yoshioka-Nishimura, Miho Graduate School of Natural Science and Technology, Okayama University
Yamamoto, Yasusi Graduate School of Natural Science and Technology, Okayama University
抄録
The reaction center-binding D1 protein of Photosystem II is damaged by excessive light, which leads to photoinhibition of Photosystem II. The damaged D1 protein is removed immediately by specific proteases, and a metalloprotease FtsH located in the thylakoid membranes is involved in the proteolytic process. According to recent studies on the distribution and organization of the protein complexes/supercomplexes in the thylakoid membranes, the grana of higher plant chloroplasts are crowded with Photosystem II complexes and light-harvesting complexes. For the repair of the photodamaged D1 protein, the majority of the active hexameric FtsH proteases should be localized in close proximity to the Photosystem II complexes. The unstacking of the grana may increase the area of the grana margin and facilitate easier access of the FtsH proteases to the damaged D1 protein. These results suggest that the structural changes of the thylakoid membranes by light stress increase the mobility of the membrane proteins and support the quality control of Photosystem II.
キーワード
Photosystem II
Light stress
FtsH protease
Grana
Thylakoid
発行日
2014
出版物タイトル
Journal of Photochemistry and Photobiology B: Biology
137巻
出版者
Elsevier
開始ページ
100
終了ページ
106
ISSN
1011-1344
NCID
AA10686173
資料タイプ
学術雑誌論文
言語
English
著作権者
© 2014 Elsevier B.V. All rights reserved.
論文のバージョン
author
査読
有り
DOI