Time-resolved measurements of fluorescence from reaction centres of Rhodopseudomonas viridis and the effect of menaquinone reduction |
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Institution: | 1. Institut für Physikalische und Theoretische Chemie, Technische Universität München, D-8046 Garching, FRG;2. Department of Botany, University of Glasgow, Glasgow G12 8QQ, Scotland |
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Abstract: | The kinetics of the fluorescence emitted by the ‘special pair’ of bacteriochlorophyll b molecules in reaction centres from Rhodopseudomonas viridis was recorded in the near infrared, with a time resolution of 1 ns. In nonreduced reaction centres two decay components were resolved with lifetimes of <0.5 and 2.5 ns. Upon reduction of the menaquinone electron acceptor three decay components were detected with lifetimes of < 0.5, 2.5 and 15ns. |
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