Lateral energy transfer model for adjacent light-harvesting antennae rods of C-phycocyanins.
Modeling of excitation transfer pathways have been carried out for the structure of Spirulina platensis C-phycocyanin. Calculations by Förster mechanism using the crystal structure coordinates determined in our laboratory indicate ultra-fast lateral energy transfer rates between pairs of chromophores attached to two adjacent hexamer disks. The pairwise transfer times of the order of a few pico-seconds correspond to resonance transitions between peripheral beta155 chromophores. A quantitative lateral energy transfer model for C-phycocyanin light-harvesting antenna rods that is suggestive to its native structural organization emerges from this study.
Padyana
Anil K
AK
Department of Physics, Indian Institute of Science, Bangalore-560012, India.
Ramakumar
S
S
D001426:Bacterial Proteins / Q000737:chemistry / Q000378:metabolism; D004735:Energy Transfer; D045342:Light-Harvesting Protein Complexes / Q000737:chemistry* / Q000378:metabolism*; D008958:Models, Molecular; D008968:Molecular Conformation; D010798:Phycocyanin / Q000737:chemistry* / Q000378:metabolism*; D053545:Spirulina
D001426:Bacterial Proteins; D045342:Light-Harvesting Protein Complexes; D010798:Phycocyanin