Theoretical modelling and experimental investigation of nonlinear dynamic precedes in ensemble of photosynlhetic reaction centers

The results of theoretical study of dynamic selforganization phenomenon in a specific macromolecular structure, the photosynthetic reaction center (RC), is presented with accounting of the stochastic effects in the RCs ensemble. The description both the photomobilised electron transfer kinetics and...

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Bibliographic Details
Published in:Biopolimery i kletka 1998, Vol.14 (1), p.68-78
Main Authors: Abgaryan, G. A., Goushcha, A. O., Kapoustina, M. T., Kharkyanen, V. N.
Format: Article
Language:English
Subjects:
Electron transfer
Macromolecules
Reaction centers
Stochasticity
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Summary:The results of theoretical study of dynamic selforganization phenomenon in a specific macromolecular structure, the photosynthetic reaction center (RC), is presented with accounting of the stochastic effects in the RCs ensemble. The description both the photomobilised electron transfer kinetics and structure conformational transitions is based on the solution of the direct Kolmogorov equations using the Markov approach. Both the case of thermodynamically equilibrium system and nonequilibrium one were considered for the variables distribution function which describes the diffusion in the conformational coordinate space. The calculations revealed the bistable system behaviour in a certain interval of electron photomobilization rate. The modelling showed a good agreement with the results of experimental investigation of transient absorbance of the RCs from purple bacteria
ISSN:0233-7657
1993-6842
DOI:10.7124/bc.0004BB