Prominent Role of Charge Transfer in the Spectral Tuning of Photosynthetic Light-Harvesting I Complex
Kazuhiro J. Fujimoto,
Rio Tsuji,
Zheng-Yu Wang-Otomo
et al.
Abstract:Purple bacteria possess two ring-shaped protein complexes, light-harvesting 1 (LH1) and 2 (LH2), both of which function as antennas for solar energy utilization for photosynthesis but exhibit distinct absorption properties. The two antennas have differing amounts of bacteriochlorophyll (BChl) a; however, their significance in spectral tuning remains elusive. Here, we report a high-precision evaluation of the physicochemical factors contributing to the variation in absorption maxima between LH1 and LH2, namely,… Show more
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