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Related Experiment Videos

Novel myosins.

J A Hammer1

  • 1Laboratory of Cell Biology, Bldg 3, Rm B1-22, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Trends in Cell Biology
|August 1, 1991
PubMed
Summary
This summary is machine-generated.

Single-headed myosins I are ubiquitous motor proteins with novel motile properties. These myosins I interact with membranes and actin, supporting cellular movements independently of filament assembly.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Traditional myosin research focused on filamentous, two-headed forms from striated muscle.
  • Ubiquitous single-headed myosins I represent a distinct class of nonfilamentous motor proteins.

Purpose of the Study:

  • To characterize the structure and function of myosins I.
  • To explore the novel motile properties conferred by myosins I.

Main Methods:

  • Biochemical studies
  • Molecular genetic analysis
  • Genetic studies

Main Results:

  • Myosins I possess a myosin head domain and a tail domain.
  • Tail domains of myosins I interact with membranes, actin, and calmodulin.

Related Experiment Videos

  • Myosins I exhibit unique motile functions, including membrane-actin movement and actin-actin movement.

    • Conclusions:

    • Myosins I are versatile motor proteins with functions distinct from filamentous myosins.
    • Myosins I may support essential cellular movements, particularly in cells lacking myosin II.