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Lauterwasser, Christoph; Finkele, Ulrich; Struck, A.; Scheer, Hugo and Zinth, Wolfgang (1992): Primary electron transfer kinetics in bacterial reaction centers with modified bacteriochlorophylls at the monomeric sites BA,B. In: Murata, N. (ed.) : Proceedings of the ninth International Congress on Photosynthesis, Nagoya 1992. Kluwer Academic Publishers. pp. 429-432 [PDF, 997kB]


The primary electron transfer has been investigated by femtosecond time-resolved absorption spectroscopy in two chemically modified reaction centers (RC) of Rhodobacter sphaeroides, in which the monomeric bacteriochlorophylls BA and BB have both been exchanged by 132- hydroxybacteriochlorophyll a or [3-vinylJ-132-hydroxybacteriochlorophyll a. The kinetics of the primary electron transfer are not influenced by the 132-hydroxy modification. In RCs containing [3-vinyl]-132-hydroxybacteriochlorophyll a the primary rate is reduced by a factor of 10.

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