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Báo cáo khoa học: Protective effect of active oxygen scavengers on protein degradation and photochemical function in photosystem I submembrane fractions during light stress

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:0

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The protective role of reactive oxygen scavengers against photodamage was studied in isolated photosystem (PS) I submembrane fractions illumin-ated (2000lEÆm )2 Æs )1 ) for various periods at 4C. The photochemical activity of the submembrane fractions measured as P700 photooxidation was significantly protected in the presence of histidine orn-propyl gallate. Chlorophyll photobleaching resulting in a decrease of absorbance and fluorescence, and a blue-shift of both absorbance and fluorescence maxi-mum in the red region, was also greatly delayed in the presence of these scavengers. ...

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Nội dung Text: Báo cáo khoa học: Protective effect of active oxygen scavengers on protein degradation and photochemical function in photosystem I submembrane fractions during light stress

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