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Synaptic Cell Adhesion: A Structural Perspective.

Sumit J Bandekar1, Szymon P Kordon1, Demet Araç2

  • 1Department of Biochemistry and Molecular Biology, University of Chicago Neuroscience Institute, Institute for Biophysical Dynamics, and Center for Mechanical Excitability, University of Chicago, Chicago, IL, USA.

Advances in Neurobiology
|January 22, 2026
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Summary
This summary is machine-generated.

Cell adhesion molecules (CAMs) are crucial for nervous system development and function. Structural biology reveals how CAMs

Keywords:
Adhesion GPCRAlternative splicingCell adhesion moleculeLatrophilinSignalingSynapse

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Structural Biology

Background:

  • Cell adhesion molecules (CAMs) mediate intercellular interactions in the nervous system.
  • CAMs guide neuronal development, synapse formation, and synaptic plasticity.
  • CAMs have extracellular adhesive roles and induce intracellular signaling.

Purpose of the Study:

  • To detail structures of key synaptic adhesion complexes.
  • To provide mechanistic explanations of how structures inform functional work.
  • To establish a foundation for understanding neuronal connectivity in health and disease.

Main Methods:

  • Structural biology techniques were employed.
  • Analysis of CAMs with diverse adhesion domain classes (e.g., Ig, LRR, LNS).
  • Examination of alternative splicing's role in CAM interactions.

Main Results:

  • Structural insights illuminate multiple modes of CAM regulation.
  • Structures explain how alternative splicing affects CAM homotypic and heterotypic interactions.
  • Detailed structures of key synaptic adhesion complexes are presented.

Conclusions:

  • Structural basis of synaptic adhesion is crucial for understanding neuronal connectivity.
  • This knowledge aids in deciphering complex interactions in health and disease.
  • Structural biology has significantly advanced the understanding of CAMs' roles.