Abstract
The primary electron transfer (ET) in reaction centers (RCs) of photosynthetic bacteria results in the oxidation of the primary donor, P, and reduction of the bacteriopheophytin acceptor HA with a ~3 ps time constant at room temperature (see [1,2] for references). The participation of the bacteriochlorophyll monomer BA (active chain) in ET was suggested by picosecond measurements as early as 1978 [3]. This concept was subject to many further studies [4–14]. Recent measurements in pheophytin a reconstituted RCs [6–8, 12–14] and in the so-called β-mutant [10] have shown that the energy of the P+BA- state in these modified RCs is below that of P*. These observations support the model in which BA is a distinct intermediate.
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Streltsov, A.M., Vulto, S.I.E., Shkuropatov, A.Y., Hoff, A.J., Aartsma, T.J., Shuvalov, V.A. (1998). Coherent Nuclear Motions In Reaction Centers from Rhodobacter Sphaeroides Upon 30-Femtosecond Excitation. In: Garab, G. (eds) Photosynthesis: Mechanisms and Effects. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3953-3_160
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DOI: https://doi.org/10.1007/978-94-011-3953-3_160
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