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РЖ ВИНИТИ 34 (BI16) 96.02-04В3.19

Hook, Fredrik.
Light-insuced voltage changes associated with electorn and proton transfer in photosystem II core complesex reconstituted in phospholipid monolayers [Text] / Fredrik Hook, Peter Brzezinski // Biophys. J. - 1994. - Vol. 66, N 6. - P2066-2072 . - ISSN 0006-3495
Перевод заглавия: Индуцированные светом изменения разности потенциалов, ассоциированные с переносом электронов и протонов в сердцевинных комплексах фотосистемы II, реконструированных в фосфолипидных монослоях
Аннотация: We have measured light-induced voltage changes (electrogenic events) in photosystem II (PSII) core complexes oriented in phospholipid monolayers. These events are compared to those measured in the functionally and structurally closely related reaction centers from the photosynthetic bacterium Rhodobacter sphaeroides. In both systems we observed a rapid (100 ns) light-induced increase in voltage associated with charge separation. In PSII reaction centers it was followed by a decrease (decay) of 'ЭКВИВ'14% of the charge-separation voltage and a time constant of 'ЭКВИВ'500 'мю's. In bacterial reaction centers this decay was 'ЭКВИВ'9% of the charge-separation voltage, and the time constant was 'ЭКВИВ'200 'мю's. The decay was presumably associated with a structural change. In bacterial reaction centers, in the presence of excess water-soluble cytochrome c{2+}, it was followed by a slower increase of 'ЭКВИВ'30% of the charge-separation voltage, associated with electron transfer from the cytochrome to the oxidized donor, P{+}. In PSII reaction centers, after the decay the voltage remained on the same level for '='0.5 s. In PSII reaction centers the electron transfer Q{-}[A]Q[B]'-'Q[A]Q{-}[B] contributed with an electrogenicity of '

ГРНТИ	34.31.17

ВИНИТИ 341.31.17.25
Рубрики: ПРОТОННЫЙ ТРАНСПОРТ
ЭЛЕКТРОННЫЙ ТРАНСПОРТ
ФОТОСИСТЕМА II
ИНДУКЦИЯ СВЕТОМ

Доп.точки доступа:
Brzezinski, Peter

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