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Updated: May 5, 2026

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A bacterial tubulovesicular network.

Devrim Acehan1, Rachel Santarella-Mellwig, Damien P Devos

  • 1European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.

Journal of Cell Science
|November 22, 2013
PubMed
Summary
This summary is machine-generated.

The planctomycete bacterium Gemmata obscuriglobus possesses a unique endomembrane system. This discovery offers insights into the evolution of complex cellular structures in bacteria.

Keywords:
Endomembrane systemPlanctomycetesTubulovesicular network

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Area of Science:

  • Microbiology
  • Cell Biology
  • Evolutionary Biology

Background:

  • The endomembrane system is crucial for cellular function in eukaryotes.
  • Its presence and complexity in prokaryotes remain largely unexplored.
  • Planctomycetes represent a unique bacterial phylum with unusual cellular organization.

Purpose of the Study:

  • To investigate the presence and nature of an endomembrane system in Gemmata obscuriglobus.
  • To understand the functional capabilities of this system, including protein trafficking and degradation.
  • To explore the implications for the evolution of endomembrane systems.

Main Methods:

  • Advanced microscopy techniques to visualize cellular structures.
  • Protein localization studies using fluorescent markers.
  • Biochemical assays to assess protein internalization and degradation.

Main Results:

  • Identified a membranous tubulovesicular network in Gemmata obscuriglobus.
  • Demonstrated interaction of this network with membrane coat proteins.
  • Confirmed the system's capacity for protein internalization and degradation.

Conclusions:

  • Gemmata obscuriglobus harbors a functional endomembrane system.
  • This finding challenges traditional views of prokaryotic cellular complexity.
  • The bacterium serves as a model for studying the origins of eukaryotic endomembrane systems.