| Abstract: | The data indicating the absence of seasonal changes in the isoform composition and functional properties of actin and thin filament associated proteins from skeletal muscles of hibernating ground squirrels were obtained. Taking into account the data obtained earlier by the authors on significant qualitative and quantitative changes in isoform composition and functional properties of the other contractile protein, myosin, it is concluded that the suppression of contractile capacity of the executive apparatus of skeletal muscles of animals upon hibernation and its repair upon arousal are determined by the above adaptive changes in myosin. |
