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Related Experiment Videos

Gap junctions and connexin-interacting proteins.

Ben N G Giepmans1

  • 1Department of Neurosciences, The National Center of Microscopy and Imaging Research, University of California San Diego, School of Medicine, 1000 BSB, 9500 Gilman Drive, MC0608, La Jolla, CA 92093-0608, USA. giepmans@ncmir.ucsd.edu

Cardiovascular Research
|April 20, 2004
PubMed
Summary
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Gap junctions, formed by connexins, facilitate cell communication. New research reveals connexin-interacting proteins suggest roles beyond channels, including gene transcription and cytoskeletal regulation.

Area of Science:

  • Cell biology
  • Molecular biology
  • Biochemistry

Background:

  • Gap junctions are intercellular channels crucial for cell-to-cell communication.
  • Connexins are the primary protein components of gap junction channels.
  • Regulation of gap junction communication (GJC) involves protein kinases, phosphatases, and structural proteins like ZO-1 and microtubules.

Purpose of the Study:

  • To review proteins that interact with gap junctions.
  • To discuss the functions of these interacting proteins.
  • To highlight potential non-channel roles of connexins and shared proteins with other cell junctions.

Main Methods:

  • Literature review of studies on gap junction interacting proteins.
  • Analysis of protein similarities across different cell junction types.

Related Experiment Videos

  • Examination of evidence for connexin involvement in gene transcription and cytoskeletal regulation.

    • Main Results:

    • An expanding list of proteins associate with gap junctions.
    • Connexins may possess functions beyond channel formation, including transcriptional and cytoskeletal regulation.
    • Proteins at the cytoplasmic face of tight, adherens, and gap junctions show striking similarities.

    Conclusions:

    • Connexin-associated proteins play diverse roles in cellular processes.
    • Connexins may function in gene transcription and cytoskeletal anchorage.
    • Shared protein components suggest integrated roles for different cell junction types.