Modification of the pheophytin midpoint potential in photosystem II: Modulation of the quantum yield of charge separation and of charge recombination pathways
Abstract
We investigated the dependence of both the quantum yield of charge separation and pathways of charge recombination on the free energy level of the radical pair state P+Ph− in photosystem II. This was done by comparing the basal (F0) fluorescence yield and the recombination rate of the S2QA− state in various strains of Chlamydomonas reindhardtii in which the strength of a H-bond to the