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Intrinsically unstructured proteins and their functions.

H Jane Dyson1, Peter E Wright

  • 1Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA. dyson@scripps.edu

Nature Reviews. Molecular Cell Biology
|March 2, 2005
PubMed
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Many eukaryotic proteins contain intrinsically disordered regions, which are crucial for biological function. These flexible protein segments can fold upon binding or act as linkers in large molecular assemblies.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genomics

Background:

  • Eukaryotic genomes contain gene sequences encoding proteins with significant intrinsically disordered regions (IDRs).
  • Traditionally, protein function was linked to stable three-dimensional structures, but IDRs challenge this view.
  • IDRs are often conserved in sequence and composition across species, suggesting functional importance.

Purpose of the Study:

  • To highlight the functional significance of intrinsically disordered regions in proteins.
  • To explore the diverse roles of disordered protein segments beyond stable structures.
  • To emphasize the emerging understanding of IDR functions in biological systems.

Main Methods:

  • Bioinformatic analysis of eukaryotic genomes to identify disordered protein segments.

Related Experiment Videos

  • Comparative sequence and compositional analysis of conserved disordered regions.
  • Literature review on the functional characterization of intrinsically disordered proteins.

    • Main Results:

    • Disordered regions are prevalent in eukaryotic proteomes and can be highly conserved.
    • Contrary to traditional views, these regions exhibit diverse functional roles.
    • Two primary mechanisms of function were identified: coupled folding-binding and flexible linkers.

    Conclusions:

    • Intrinsically disordered regions are integral components of functional proteomes.
    • Disordered protein segments play critical roles in molecular recognition and assembly.
    • Further research into IDRs will continue to expand our understanding of protein function.