Light harvesting in a fluctuating antenna

摘要: One of the major players in oxygenic photosynthesis, photosystem II (PSII), exhibits complex multiexponential fluorescence decay kinetics that for decades has been ascribed to reversible charge separation taking place reaction center (RC). However, this description protein dynamics is not taken into consideration. The intrinsic dynamic disorder light-harvesting proteins along with their fluctuating dislocations within antenna inevitably result varying connectivity between pigment–protein complexes and therefore can also lead nonexponential excitation kinetics. On basis presumption, we propose a simple conceptual model describing diffusion continuous medium accounting possible variations transfer rates. Recently observed PSII different sizes are perfectly reproduced only two adjustable parameters instead many times amplitudes required standard analysis procedures; ...