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INVESTIGATION OF INTERACTION FE-57(3+) WITH CA2+-BINDING SITE OF PHOTOSYNTHETIC OXYGEN-EVOLVING COMPLEX OF PSIIстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
- Авторы: SEMIN BK, ALEKSANDROV AY, IVANOV II, NOVAKOVA AA, PARAK F., RUBIN AB
- Журнал: Biologicheskie Membrany
- Том: 12
- Номер: 4
- Год издания: 1995
- Издательство: Biologicheskie Membrany
- Местоположение издательства: Russian Federation
- Первая страница: 341
- Последняя страница: 350
- Аннотация: The oxygen-evolving PSII membranes (I) and the Ca2+-depleted PSII membranes (II) were incubated in (FeCl3)-Fe-57-sucrose solution and their Mossbauer spectra were registered. Spectrum of resonance absorption of these samples displayed analogous shape; the value of effect indicated a high level of the unspecifically bound Fe-57(3+). Parameters of chemical shift (delta) and quadrupole splitting (Delta) of the iron ion were delta = 0.38 mm/s, Delta = 0,76 mm/s. After removal of the unspecifically bound Fe-57(3+) by o-phenanthroline, the Mossbauer spectra of the PSII membranes (I) represented superposition of three doublets; the spectra or the Ca2+-extracted PSII membranes (II) displayed four doublers. The relative content of the 4th component was 43%. The appearance of the 4th component in the spectra of the Ca2+-depleted PSII membranes (II) can be explained by substitution of Ca2+ by Fe3+ in the Ca2+-bounding site.
- Добавил в систему: Сёмин Борис Константинович