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Examining multiprotein signaling complexes from all angles.

Jon C D Houtman1, Mira Barda-Saad, Lawrence E Samelson

  • 1Laboratory of Cellular and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.

The FEBS Journal
|November 3, 2005
PubMed
Summary
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Investigating multiprotein signaling complexes, like the linker for activation of T cells (LAT), reveals how they form and function. Understanding these dynamic protein interactions is crucial for physiological processes and disease research.

Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Immunology

Background:

  • Dynamic protein-protein interactions are fundamental to physiological processes, particularly in forming multiprotein signaling complexes at transmembrane receptors.
  • The aberrant formation of these signaling complexes has significant clinical implications, driving active research into their composition, function, and assembly mechanisms.

Purpose of the Study:

  • To review and exemplify methods for characterizing multiprotein signaling complexes.
  • To highlight how systematic application of complementary techniques enhances understanding of complex formation, composition, and function.

Main Methods:

  • Utilizes a review approach, focusing on the adapter protein Linker for Activation of T cells (LAT) as a model system.
  • Employs a range of established biochemical and biophysical techniques to analyze protein complex dynamics.

Related Experiment Videos

Main Results:

  • Demonstrates how diverse techniques, when used systematically, provide an integrated view of signaling complex assembly and function.
  • Highlights the critical role of adapter proteins like LAT in orchestrating signal transduction pathways.

Conclusions:

  • The systematic and complementary use of various techniques is essential for a comprehensive understanding of multiprotein signaling complexes.
  • Investigating model proteins like LAT offers valuable insights into fundamental mechanisms of cellular signaling relevant to health and disease.