[Effect of caldesmon on the type of conformation changes in F-actin induced by the binding of myosin 1 subfragment].
1988
: The effect of caldesmon on the conformational changes of F-actin caused by myosin subfragment 1 (S-1) binding was studied, using the polarized microfluorimetry method. It was demonstrated that the polarized fluorescence of rhodaminil-phalloin specifically bound to F-actin of pure actin filaments as well as of tropomyosin-containing actin filaments changes as a result of binding to S-1. The nature of these changes depends on the presence of caldesmon in the filaments. Caldesmon was supposed to modify the conformational changes in F-actin induced by S-1.
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