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Related Experiment Videos

Adaptins: the final recount.

M Boehm1, J S Bonifacino

  • 1Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.

Molecular Biology of the Cell
|October 13, 2001
PubMed
Summary
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Adaptor protein (AP) complexes are crucial for intracellular transport. This study surveys adaptins across diverse species, revealing variations in AP complex composition and diversification through isoforms.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Evolutionary Biology

Background:

  • Adaptins are key subunits of adaptor protein (AP) complexes.
  • AP complexes mediate intracellular vesicle formation and cargo selection.
  • Understanding adaptin diversity is vital for deciphering cellular transport mechanisms.

Purpose of the Study:

  • To conduct a comprehensive survey of adaptins in sequenced genomes.
  • To identify variations in AP complex composition across different species.
  • To analyze the structural, evolutionary, and functional aspects of adaptins.

Main Methods:

  • Genome-wide survey of adaptin genes.
  • Comparative analysis of AP complex composition.
  • Bioinformatic analysis of adaptin structure, localization, and evolution.

Related Experiment Videos

  • Review of genetic functional analyses and related proteins (GGAs, stonins).

    • Main Results:

    • Humans, mice, and Arabidopsis thaliana possess four AP complexes (AP-1, AP-2, AP-3, AP-4).
    • Drosophila melanogaster, C. elegans, Saccharomyces cerevisiae, and Schizosaccharomyces pombe have three AP complexes (AP-1, AP-2, AP-3).
    • Adaptin diversification occurs through isoforms encoded by distinct genes or alternative splicing.

    Conclusions:

    • Significant variations exist in AP complex composition across eukaryotes.
    • Adaptin isoforms contribute to the functional diversity of intracellular transport.
    • The study provides a foundation for further research into adaptin function and evolution.