[Angle diagrams of light scattering in the suspension of isolated myofibrils in native, contracted and relaxed states].

An angle diagram of light scattering of myofibril suspensions was extremely asymmetric in the range of 0.05 to 10 degrees. The extent of asymmetry increased at relaxation and sharply decreased at contraction of myofibrils. Angle diagrams for myofibril light scattering calculated according to the approximate formulae of Mie theory, were close to those obtained in the experiment. It was shown that a high extent of asymmetry of calculated diagrams is determined by a low refractive index of myofibrils rather than by great dimensions of myofibrils. It is supposed that changes in the shape of scattering diagram and in other optical characteristics of myofibril and actomyosin suspensions associated with changes in their functional states depend mostly upon changes in the inner arrangement of particles rather than in their dimensions.