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The influence of hydrogen bonds on electron transfer in photosynthetic RCsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Krasilnikov P.M., Mamonov P.A., Knox P.P., Paschenko V.Z., Rubin A.B.
- Журнал: Biochimica et Biophysica Acta - General Subjects
- Том: 1767
- Год издания: 2007
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 541
- Последняя страница: 549
- DOI: 10.1016/j.bbabio.2007.02.024
- Аннотация: Hydrogen bonds formed between photosynthetic reaction centers (RCs) and their cofactors were shown to affect the efficacy of electron transfer. The mechanism of such influence is determined by sensitivity of hydrogen bonds to electron density rearrangements, which alter hydrogen bonds potential energy surface. Quantum chemistry calculations were carried out on system with two cofactors of Rhodobacter sphaeroides RC, namely: bacteriochlorophyll dimer P and primary quinone QA. The latter one forms two hydrogen bonds with its environment, which are shown to be highly sensitive to the QA state. In the case of the reduced primary quinone two stable hydrogen bonds proton positions were shown to exist, while there is only one in the case of the oxidized primary quinone. Taking into account this fact and also the ability of proton to transfere between potential energy wells along a hydrogen bond, theoretical study of hydrogen bonds polarization temperature dependence was carried out. Current theory was successfully applied to interprete dark P+/QA- recombination rate temperature dependence.
- Добавил в систему: Красильников Павел Михайлович