Photoinactivation Sites of Photosystem I in Isolated Chloroplasts
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概要
- 論文の詳細を見る
Illumination of isolated spinach chloroplasts under aerobic conditions induced photoinactivation of PS I as measured by NADP^+ photoreduction with 2,6-dichloro-phenolindophenol and ascorbate as electron donors. The iron-sulfur centers X, B, and A also were decreased. The extent of photoinactivation of any of these centers or P700 as single components could not account for the loss of PS I activity. It was correlated, however; with the product of each fraction of the three iron-sulfur centers remaining intact. These results suggest a linear electron transfer sequence of the three centers. Incubation of chloroplasts with xanthine oxidase in the dark also led to decrease of PS I activity as well as of iron-sulfur centers. It is concluded that the main cause of photoinactivation of PS I is the destruction of the iron-sulfur centers by some species of active oxygen produced by illuminated class II chloroplasts.
- 日本植物生理学会の論文
著者
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Inoue Kaori
Department Of Cell Biology National Institute For Basic Biology:department Of Molecular Biomechanics
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Inoue Kazuhito
Department of Biology, School of Education, Waseda University
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Hiyama Tetsuo
Department of Biochemistry, Faculty of Sciences, Saitama University
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Sakurai Hidehiro
Department of Biology, School of Education, Waseda University
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Inoue K
Department Of Cell Biology National Institute For Basic Biology:department Of Molecular Biomechanics
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Hiyama Tetsuo
Department Of Biochemistry Faculty Of Sciences Saitama University
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Hiyama T
Department Of Biochemistry And Molecular Biology Saitama University
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Inoue Kazuhito
Department Of Biological Sciences Graduate School Of Science University Of Tokyo
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Sakurai H
Osaka Univ. Osaka
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Sakurai Hidehiro
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Sakurai Hidehiro
Department Of Applied Chemistry Faculty Of Engineering Osaka University
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Hiyama Tetsuo
Department of Biochemistry and Molecular Biology, Saitama University
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