Optimal Mutual Orientational Ordering of Qy Transition Dipoles of Adjacent Subantennae Pigments in the Superantenna of the Photosynthetic Green Bacterium Chloroflexus Aurantiacus. Theoretical and Experimental Studies
This work continues the series of our studies on the basic principles in the organization of natural light-harvesting antennae, which we theoretically predicted for the optimal model light-harvesting systems, initiated by our concept of the rigorous optimization of photosynthetic apparatus structure by functional criteria. This work deals with the problem of the structure optimization of Cf. aurantiacus heterogeneous superantenna, consisting of several uniform subantennae, which raises the problem of their optimal interfacing. Mathematical modeling of the functioning of this natural superantenna allowed us to consider possible optimization of this process via optimizing the mutual orientation of Qy transition dipole moments vectors of the lightharvesting molecules in adjacent subantennae and, as a consequence, to suggest a model of optimal orientation of B798 BChl a Qy transition dipoles within a single chlorosome. This model was confirmed by polarized difference absorption spectroscopy of isolated Cf.aurantiacus chlorosomes.
Structure-function correlations Green bacterium Cf.aurantiacus Orientation of B798 pigments
Andrey Yakovlev Vladimir Novoderezhkin Alexandra Taisova Anastasiya Zobova Zoya Fetisova
A.N.Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University,Moscow, 119992, Russian Federation
国际会议
15th International Conference on Photosynthesis(第15届国际光合作用大会)
北京
英文
113-116
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）