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Gap junctional complexes: from partners to functions.

Jean-Claude Hervé1, Nicolas Bourmeyster, Denis Sarrouilhe

  • 1Interactions et Communications Cellulaires, Université de Poitiers, Poitiers, France. jean.claude.herve@univ-poitiers.fr

Progress in Biophysics and Molecular Biology
|May 18, 2007
PubMed
Summary
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Gap junctions facilitate cell communication via connexins (Cxs). This review highlights proteins interacting with Cxs, crucial for channel activity and diverse cellular functions like transcriptional regulation.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Gap junctions (GJs) are essential for intercellular communication in animal tissues.
  • GJ channels are formed by connexins (Cxs), innexins, or pannexins and their activity is tightly regulated.
  • Regulation involves protein modifications, multiprotein complexes, and scaffolding proteins that influence channel localization and function.

Purpose of the Study:

  • To review recent advancements in understanding proteins that interact with junctional proteins.
  • To elucidate the functional significance of these protein-protein interactions.
  • To explore the expanding roles of GJ proteins beyond cell-cell communication.

Main Methods:

  • Literature review of recent scientific publications.

Related Experiment Videos

  • Analysis of protein-protein interaction studies.
  • Synthesis of findings on scaffolding proteins and signaling complexes.

    • Main Results:

    • Identified various proteins interacting with connexins and other junctional proteins.
    • Demonstrated the critical role of protein interactions in GJ channel localization and activity.
    • Highlighted the involvement of GJ proteins in transcriptional and cytoskeletal regulation.

    Conclusions:

    • Protein-protein interactions are fundamental to gap junction function and regulation.
    • Gap junction proteins are implicated in a broader range of cellular processes than previously recognized.
    • Further research into these interactions will uncover new therapeutic targets.