Результаты поиска по 'reaction of recombination':
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  1. Mamonov P.A., Krasilnikov P.M., Knox P.P., Rubin A.B.
    Modelling of conformational change within photosynthetic reaction center of Rb. sphaeroides bacteria
    Computer Research and Modeling, 2009, v. 1, no. 4, pp. 437-448

    A possible conformational change, which accompanies electron tranport in Rb. sphaeroides photosynthetic reaction center (RC), was studied using quantum-chemical approach. A kinetic model which takes into account two conformational states of RC is proposed. The model quantitatively describes experimental temperature dependencies of recombination reaction rate P+QA- → PQA. Quantum-chemical modeling of primary quinone (QA) binding site permits one to propose a minor shift of QA as a conformational change of interest. The shift is accompanied by break of a hydrogen bond between 4–C=O group of QA and histidine M219, and formation of a new hydrogen bond between QA and hydroxyl group of threonine M222. Characteristics of this conformational change were obtained from quantum-chemical calculations and match parameters of kinetic model in qualitative fashion.

    Keywords: Rhodobacter sphaeroides, photosynthetic reaction center, conformational change, reaction of recombination.
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