Network modeling of chlorophyll excitation transfer rates in cyanobacterial photosystem I in the dipolar coupling approximation

The flow of excitation energy in photosystems can be described by the energy funnel model, where excitations from the higher-energy antenna pigments are funneled toward the lower-energy reaction-center chlorophylls, eventually reaching the P700 where charge separation takes place. Thus, energy transfer flow between chlorophylls in a photosystem can be modeled as a network. In this study, a network of the energy flow between individual chlorophyll nodes in cyanobacterial photosystem I (from Synechococcus elongatus) is constructed.