Abstract
An actomyosin system, which is the mechano-chemical systems of proteins, in a reconstruction motility assay system is one of many effective systems for discussing the formation mechanism of self-organized orders at protein levels. In this study we investigated the transformation change of sliding actin filaments using the optical microscopy technique and image analysis. As a result, the local windings propagated along an actin filament, and complex patterns of windings were formed. The three conditions of winding propagations need the following; the intermittent actions from myosins to the actin filaments, the connections between actin monomers have nonlinearity, and the actin filaments are flexible. These results suggest that the actin filaments have the regulation mechanism, which propagate the actions of myosins as windings.
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