Cited by 256Axon Guidance and Neuronal SignalingNeuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental Disorders

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

EphB-Mediated Degradation of the RhoA GEF Ephexin5 Relieves a Developmental Brake on Excitatory Synapse Formation

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Abstract

The mechanisms that promote excitatory synapse formation and maturation have been extensively studied. However, the molecular events that limit excitatory synapse development so that synapses form at the right time and place and in the correct numbers are less well understood. We have identified a RhoA guanine nucleotide exchange factor, Ephexin5, which negatively regulates excitatory synapse development until EphrinB binding to the EphB receptor tyrosine kinase triggers Ephexin5 phosphorylation, ubiquitination, and degradation. The degradation of Ephexin5 promotes EphB-dependent excitatory synapse development and is mediated by Ube3A, a ubiquitin ligase that is mutated in the human cognitive disorder Angelman syndrome and duplicated in some forms of Autism Spectrum Disorders (ASDs). These findings suggest that aberrant EphB/Ephexin5 signaling during the development of synapses may contribute to the abnormal cognitive function that occurs in Angelman syndrome and, possibly, ASDs.

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Crossref · 10.1016/j.cell.2010.09.038

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  1. Micheva, K.D., and Smith, S.J. (2007). Array tomography: a new tool for imaging the molecular architecture and ultrastructure of neural circuits. Neuron 55, 25–36. · DOI · Paper page

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Metadata

Authors
Margolis, S. S., Salogiannis, J., Lipton, D. M., Mandel-Brehm, C., Wills, Z. P., Mardinly, A. R., Hu, L., Greer, P. L., Bikoff, J. B., Ho, H.-Y. H., Soskis, M. J., Sahin, M., & Greenberg, M. E.
Affiliations
Harvard University (US)
Corresponding author
Greenberg, Michael E.
Venue
Cell
Publisher
Elsevier BV
Published
2010-10
Volume
143
Issue
3
Pages
442-455
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2031746153
Cited by
256
References
42
Citations by year
2026: 8 · 2025: 8 · 2024: 12 · 2023: 20 · 2022: 10 · 2021: 14 · 2020: 16 · 2019: 12 · 2018: 13 · 2017: 16 · 2016: 21 · 2015: 20 · 2014: 17 · 2013: 19 · 2012: 27
FWCI
8.80
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01ns045500-29)
  • National Institute on Aging (5T32AG00222-15, T32AG000222)
  • National Institute of Neurological Disorders and Stroke (R01-NS-045500, R01 5R01NS045500)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
EphB receptors, protein degradation, ubiquitination, UBE3A, Angelman syndrome, autism spectrum disorder, synapse maturation, receptor tyrosine kinase signaling
MeSH terms
Animals, Child, Child Development Disorders, Pervasive, Embryo, Mammalian, Humans, Synapses, Angelman Syndrome, Dentate Gyrus, Rats, Long-Evans, rhoA GTP-Binding Protein, Receptors, Eph Family, Ubiquitin-Protein Ligases, Mice, Rats, Gene Knockout Techniques

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