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Elevation of photosystem II thermal stability at pH 5.7 due to the structural transition in the oxygen-evolving complexстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 25 мая 2022 г.
- Авторы: Lovyagina E., Semin B.
- Журнал: Journal of Plant Biochemistry and Biotechnology
- Том: 31
- Номер: 2
- Год издания: 2022
- Издательство: Society for Plant Biochemistry and Biotechnology
- Местоположение издательства: India
- Первая страница: 440
- Последняя страница: 445
- DOI: 10.1007/s13562-021-00693-x
- Аннотация: In the presented work, a comparative study of the photosystem II (PSII) preparations resistance to elevated temperatures at pH 6.5 and 5.7 was carried out. The native and Ca-depleted PSII are completely inactivated (oxygen evolution and 2,6-dichlorophenolindophenol reduction) at 50 °C in buffer with pH 6.5. Inactivation is determined mainly by destruction of manganese cluster in the oxygen-evolving complex (OEC) since the electron-transport chain in the Mn-depleted PSII is more resistant to the heat treatment. We found that PSII membranes suspended in buffer with pH 5.7 are less sensitive to heat stress (50 °C) than the samples at pH 6.5. Residual rate of electron transport was about 22% and 3% respectively after heat treatment. We suggest that the increasing of the OEC resistance to the heat stress at pH 5.7 is determined by a pH-dependent change of the OEC manganese cations redox potential.
- Добавил в систему: Ловягина Елена Рудольфовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Lovyagina-Semin2022_Article_ElevationOfPhotosystemIITherma.… | Lovyagina-Semin2022_Article_ElevationOfPhotosystemIITherma.… | 306,1 КБ | 24 мая 2022 [Elena.Lovyagina] |