Energy transfer in photosynthesis: experimental insights and quantitative models.
We overview experimental and theoretical studies of energy transfer in the photosynthetic light-harvesting complexes LH1, LH2, and LHCII performed during the past decade since the discovery of high-resolution structure of these complexes. Experimental findings obtained with various spectroscopic techniques makes possible a modelling of the excitation dynamics at a quantitative level. The modified Redfield theory allows a precise assignment of the energy transfer pathways together with a direct visualization of the whole excitation dynamics where various regimes from a coherent motion of delocalized exciton to a hopping of localized excitations are superimposed. In a single complex it is possible to observe the switching between these regimes driven by slow conformational motion (as we demonstrate for LH2). Excitation dynamics under quenched conditions in higher-plant complexes is discussed.
van Grondelle
Rienk
R
Department of Biophysics, Faculty of Sciences, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands. rienk@few.vu.nl
Novoderezhkin
Vladimir I
VI
D004735:Energy Transfer; D045342:Light-Harvesting Protein Complexes / Q000502:physiology; D008962:Models, Theoretical; D010788:Photosynthesis
D045342:Light-Harvesting Protein Complexes