Lipid Fingerprints and Cofactor Dynamics of Light-Harvesting Complex II in Different Membranes.

ABSTRACT: Plant light-harvesting complex II (LHCII) is the key antenna complex for plant photosynthesis. We present coarse-grained molecular dynamics simulations of monomeric and trimeric LHCII in a realistic thylakoid membrane environment based on the Martini force field. The coarse-grained protein model has been optimized with respect to atomistic reference simulations. Our simulations provide detailed insights in the thylakoid lipid fingerprint of LHCII which compares well with experimental data from membrane protein purification. Comparing the monomer and trimeric LHCII reveals a stabilizing effect of trimerization on the chromophores as well as the protein. Moreover, the average chromophore distance shortens in the trimer leading to stronger excitonic couplings. When changing the native thylako

SUBMITTER: Thallmair S 

PROVIDER: S-EPMC6486485 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature