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Published April 29, 1988 | public
Journal Article

An internal consistency test and its implications for the initial steps in bacterial photosynthesis

Abstract

Comparison of theoretical expressions for superexchange and chemical intermediate mechanisms for electron transfer from the bacteriochlorophyll dimer to a pheophytin reveals a common factor influencing their rates. If the former mechanism is to dominate the latter an internal consistency test becomes possible and is derived. Consequences are investigated for matrix elements, singlet-triplet splitting of the BChl_2+BPh - radical pair and other properties. Two possible alternative mechanisms are also considered. To discriminate among some of the possibilities the study of the effect of an applied electric field on BChl depletion and on the initial rates is suggested.

Additional Information

© 1988 Elsevier Science Publishers B.V. Received 2 February 1988; in final form 25 February 1988. It is a pleasure to acknowledge the support of this research by the National Science Foundation and the Office of Naval Research. It is also a pleasure to acknowledge useful discussions with M.E. Michel-Beyerle and J. Jortner.

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023