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Dynamin II binds to the trans-Golgi network

O Maier1, M Knoblich, P Westermann

  • 1Division of Cell Biology, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.

Biochemical and Biophysical Research Communications
|June 14, 1996
PubMed
Summary

Dynamin II, a protein crucial for cell function, is primarily found in the trans-Golgi network. Its binding patterns suggest a role in transporting vesicles after they leave the Golgi apparatus.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Dynamin II is a protein involved in membrane dynamics.
  • The Golgi apparatus is essential for protein modification and transport.
  • Vesicular transport is a fundamental cellular process.

Purpose of the Study:

  • To investigate the localization of dynamin II within the Golgi apparatus.
  • To determine the role of dynamin II in post-Golgi vesicle transport.

Main Methods:

  • Utilized dynamin II-specific antibodies for detection.
  • Employed immunoelectron microscopy for high-resolution localization.
  • Analyzed dynamin II binding to Golgi membranes under different conditions (GTP-gamma-S, phorbolester stimulation).

Main Results:

  • Dynamin II was predominantly localized to the trans-Golgi network.
  • GTP-gamma-S increased dynamin II binding to the trans-Golgi network.
  • Phorbolester stimulation, which promotes secretion, reduced dynamin II binding.

Conclusions:

  • Dynamin II is localized to the trans-Golgi network.
  • Dynamin II's binding behavior suggests a functional role in post-Golgi vesicle transport.

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