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Related Experiment Videos

Rab6 interacts with the mint3 adaptor protein.

Iskender Teber1, Fumiko Nagano, Joachim Kremerskothen

  • 1Department of Experimental Tumor Biology, University of Münster, D-48149 Germany.

Biological Chemistry
|October 7, 2005
PubMed
Summary
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The Rab6 GTPase protein interacts with mint3, an adaptor protein, influencing amyloid precursor protein (APP) trafficking. This discovery reveals a novel link between Rab6A, mint3, and APP processing in the Golgi apparatus.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Neuroscience

Background:

  • Rab6 GTPase controls retrograde transport between endosomes, Golgi, and ER.
  • Active Rab6A is known to regulate amyloid precursor protein (APP) intracellular processing.

Purpose of the Study:

  • To investigate Rab6A's role in APP trafficking.
  • To identify effector proteins interacting with active Rab6A.

Main Methods:

  • Yeast two-hybrid screening of a human placenta cDNA library.
  • Confocal microscopy to observe protein co-localization.
  • Density gradient centrifugation to analyze protein distribution.

Main Results:

  • Identified mint3 as a Rab6A-interacting protein.

Related Experiment Videos

  • Demonstrated GTP-dependent interaction between Rab6A and mint3.
  • Showed co-localization of Rab6A, mint3, and APP at Golgi membranes.
  • Confirmed common distribution of Rab6A, mint3, and APP in cytosolic extracts.

    • Conclusions:

    • Mint3 acts as a linker between Rab6A and APP trafficking.
    • This study elucidates a novel molecular mechanism in APP processing and transport.