Theory of photosynthetic membrane influence on B800-B850 energy transfer in the LH2 complex.

ABSTRACT: Photosynthetic organisms rely on a network of light-harvesting protein-pigment complexes to efficiently absorb sunlight and transfer excitation energy to reaction center proteins where charge separation occurs. In photosynthetic purple bacteria, these complexes are embedded within the cell membrane, with lipid composition affecting complex clustering, thereby impacting inter-complex energy transfer. However, the impact of the lipid bilayer on intra-complex excitation dynamics is less understood. Recent experiments have addressed this question by comparing photo-excitation dynamics in detergent-isolated light-harvesting complex 2 (LH2) to LH2 complexes embedded in membrane discs mimicking the biological environment, revealing differences in spectra and energy-transfer rates. In this paper,

SUBMITTER: Kulkarni C 

PROVIDER: S-EPMC11897548 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature