Cited by 470Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersRNA Research and Splicing

A Splice Code for trans-Synaptic Cell Adhesion Mediated by Binding of Neuroligin 1 to α- and β-Neurexins

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Boucard, Antony A., Chubykin, Alexander A., Comoletti, Davide, Taylor, Palmer, Südhof, Thomas C.·2005·Neuron

Abstract

Previous studies suggested that postsynaptic neuroligins form a trans-synaptic complex with presynaptic beta-neurexins, but not with presynaptic alpha-neurexins. Unexpectedly, we now find that neuroligins also bind alpha-neurexins and that alpha- and beta-neurexin binding by neuroligin 1 is regulated by alternative splicing of neuroligin 1 (at splice site B) and of neurexins (at splice site 4). In neuroligin 1, splice site B is a master switch that determines alpha-neurexin binding but leaves beta-neurexin binding largely unaffected, whereas alternative splicing of neurexins modulates neuroligin binding. Moreover, neuroligin 1 splice variants with distinct neurexin binding properties differentially regulate synaptogenesis: neuroligin 1 that binds only beta-neurexins potently stimulates synapse formation, whereas neuroligin 1 that binds to both alpha- and beta-neurexins more effectively promotes synapse expansion. These findings suggest that neuroligin binding to alpha- and beta-neurexins mediates trans-synaptic cell adhesion but has distinct effects on synapse formation, indicating that expression of different neuroligin and neurexin isoforms specifies a trans-synaptic signaling code.

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Crossref · 10.1016/j.neuron.2005.08.026

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  • Many known ASD genes, such as neuroligins and neurexins, display complex isoform-specific expression in brain, with different isoforms having distinct functions.

    “Consistent with this notion, many known ASD genes, such as neuroligins and neurexins, display a complex pattern of isoform-specific expression in brain (Boucard et al., 2005; Sudhof, 2008), with different isoforms having very distinct functions (Chih et al., 2006).”

    From Modeling Autism by SHANK Gene Mutations in Mice (2013) · cites this paper as Boucard et al., 2005

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Authors
Boucard, A. A., Chubykin, A. A., Comoletti, D., Taylor, P., & Südhof, T. C.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • University of California San Diego (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Südhof, Thomas C.
Venue
Neuron
Publisher
Elsevier BV
Published
2005-10
Volume
48
Issue
2
Pages
229-236
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1990122129
Cited by
470
References
30
Citations by year
2026: 13 · 2025: 17 · 2024: 13 · 2023: 13 · 2022: 13 · 2021: 29 · 2020: 21 · 2019: 15 · 2018: 11 · 2017: 16 · 2016: 23 · 2015: 25 · 2014: 26 · 2013: 22 · 2012: 24
FWCI
11.43
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (R37-MH52804-08, R37MH052804)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
neuroligin-1, neurexin, alternative splicing, synaptogenesis
MeSH terms
Animals, Animals, Newborn, Cell Adhesion, Cells, Cultured, Chromatography, Affinity, Glycoproteins, Hippocampus, Humans, Immunohistochemistry, Membrane Proteins, Microtubule-Associated Proteins, Nerve Tissue Proteins, Neurons, Neuropeptides, Protein Binding, Recombinant Proteins, Synapses, Transfection, Blotting, Western, Cell Adhesion Molecules, Neuronal, Mutagenesis, Synapsins, Alternative Splicing, Electrophoretic Mobility Shift Assay, Green Fluorescent Proteins, Rats

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