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Related Experiment Videos

Perspectives on Golgi apparatus form and function.

H H Mollenhauer1, D J Morré

  • 1Food Animal Protection Research Laboratory, United States Department of Agriculture, College Station, Texas.

Journal of Electron Microscopy Technique
|January 1, 1991
PubMed
Summary

The Golgi apparatus, a cellular network, has its structure and function clarified by electron microscopy. Its dictyosome component maintains order through bonding or filaments, with membrane and product movement occurring via serial or parallel modes.

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AN INTERCISTERNAL STRUCTURE IN THE GOLGI APPARATUS.

The Journal of cell biology·2009

Area of Science:

  • Cell Biology
  • Cellular Ultrastructure

Background:

  • The Golgi apparatus, discovered by Camillio Golgi in 1898, has a controversial history regarding its existence and composition.
  • Electron microscopy has been crucial in resolving these historical debates and defining the Golgi apparatus's structure.

Purpose of the Study:

  • To emphasize the role of electron microscopy in understanding the Golgi apparatus.
  • To elucidate the structural organization and functional dynamics of the Golgi apparatus.

Main Methods:

  • Analysis of electron microscopy data to determine Golgi apparatus structure.
  • Biochemical analysis to understand dictyosome organization.
  • Review of proposed models for membrane and product transport within the Golgi apparatus.

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Main Results:

  • The Golgi apparatus's primary component, the dictyosome, is a highly ordered and polarized stack of cisternae.
  • Dictyosome order is maintained by intercisternal bonding or filamentous structures.
  • Two primary transport mechanisms, serial and parallel modes, are proposed for membrane and product movement, potentially functioning concurrently.

Conclusions:

  • Electron microscopy has largely resolved historical controversies surrounding the Golgi apparatus.
  • The Golgi apparatus exhibits a complex, ordered structure with distinct mechanisms for intracellular transport.
  • Peripheral tubules of the Golgi apparatus may play a significant role in intercellular communication and transport, though their functions require further investigation.