Statistic model of muscle fibre contraction, caused by the exciton-soliton type collective excitations of α-spirals of myosin molecules
Abstract
The model, which shows that the skeletal muscle fiber contraction can be explained by the excitation of the α-spiral sections of the myosin molecules, is constructed. According to the model, the contraction occurs as a result of exciton-soliton type collective excitations, which are generated by ATF hydrolysis energy in the α-spiral sections of the myosin molecules. For calculating the force, which produces the separate excited myosin molecules, the methods of statistical physics were used. The force, generated by the entire sarcomere, is assumed to be the equal to the sum of the forces of the independent molecular motors. The dependence "force, generated by muscle - fiber length" for the single contraction, which is in a good agreement with experimental results, is obtained within the framework of a model. Model allows explaining the experimental facts, which do not find interpretation in the existing models of contraction.
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References
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