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Keywords:

  • B850 ring;
  • excitation energy transfer;
  • light harvesting;
  • photosynthesis

Abstract

A series of simulations are made to investigate the function of characteristic ring-shaped structure of B850 ring in peripheral light harvesting complex (LH2) in typical purple photosynthetic bacteria. The results suggest that the geometrical structure of B850 ring positively functions to realize the high efficient excitation energy transfer (EET) in the photosynthetic antenna systems. It also shows the importance of geometrical structure of units in EET not only in photosynthetic systems but also any other systems containing randomness in distribution of units.