Fig. 4From: Structural and Functional Hierarchy in Photosynthetic Energy Conversion—from Molecules to NanostructuresThe lifetimes of the forward (blue solid arrows) and the backward recombination (red dashed arrows) electron transfer steps between the cofactors of the RC. Insert shows the arrangement of the cofactors and the pathway of the electron transfer after saturating single-turnover flash excitation. P: primary electron donor; BChl: bacteriochlorophyll; BPhe: bacteriopheophytin; Q A : primary quinone type electron acceptor; Q B : secondary quinone type electron acceptorBack to article page