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  • Title: Electron microscopic observations on the interaction of the myosin head subunit with actin in myofibrils.
    Author: Garamvölogyi N, Váczy K, Biró EN.
    Journal: Acta Biochim Biophys Acad Sci Hung; 1976; 11(4):279-86. PubMed ID: 799893.
    Abstract:
    Glycerol-extracted rabbit psoas muscle fibres were treated with a solution containing the head subunits of myosin. Interaction of the isolated myosin heads with actin filaments in situ was indicated by an increase in the density of the I-band and by an increased diameter of actin filaments alongside their whole length. We conclude that actin filaments are able to interact with a considerably larger number of myosin molecules than that available in the myofibril under in vivo conditions.
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