Physarum Myosin Binds Ca2+: Results From Electrophoresis and Equilibrium Dialysis Experiments

  • Dietrich Kessler
  • Beverly K. Dolberg
Part of the NATO ASI Series book series (NSSA, volume 106)


We wish to understand the molecular mechanism of calcium-regulated cytoplasmic movements in the Plasmodium of Physarum polycephalum. Early studies demonstrated that the contractile activity of the cytoplasm, presumably an expression of the actomyosin ATPase activity, is influenced by Ca2+ (Hatano, 1970; Matthews, 1977). Recently it has become evident that the state of polymerization and aggregation of the actin filaments may also be Ca2+-regulated (see Chapter 9).


Light Chain Equilibrium Dialysis Physarum Polycephalum Relative Molecular Weight Cytoplasmic Movement 
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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Dietrich Kessler
    • 1
  • Beverly K. Dolberg
    • 2
  1. 1.Department of BiologyColgate UniversityHamiltonUSA
  2. 2.Department of BiologyHaverford CollegeHaverfordUSA

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