Cited by 182Ion channel regulation and functionProtein Tyrosine PhosphatasesNeuroscience and Neuropharmacology Research

A sodium channel signaling complex: modulation by associated receptor protein tyrosine phosphatase β

Ratcliffe, Charlotte F., Qu, Yusheng, McCormick, Kimberly A., Tibbs, Victoria C., Dixon, Jack E., Scheuer, Todd, Catterall, William A.·2000·Nature Neuroscience

Abstract

Voltage-gated sodium channels in brain neurons were found to associate with receptor protein tyrosine phosphatase beta (RPTPbeta) and its catalytically inactive, secreted isoform phosphacan, and this interaction was regulated during development. Both the extracellular domain and the intracellular catalytic domain of RPTPbeta interacted with sodium channels. Sodium channels were tyrosine phosphorylated and were modulated by the associated catalytic domains of RPTPbeta. Dephosphorylation slowed sodium channel inactivation, positively shifted its voltage dependence, and increased whole-cell sodium current. Our results define a sodium channel signaling complex containing RPTPbeta, which acts to regulate sodium channel modulation by tyrosine phosphorylation.

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Crossref · 10.1038/74805

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Authors
Ratcliffe, C. F., Qu, Y., McCormick, K. A., Tibbs, V. C., Dixon, J. E., Scheuer, T., & Catterall, W. A.
Affiliations
  • University of Washington (US)
  • University of Michigan (US)
Corresponding author
Catterall, William A.
Venue
Nature Neuroscience
Published
2000-05
Volume
3
Issue
5
Pages
437-444
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1519457709
Cited by
182
References
40
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 6 · 2015: 4 · 2014: 4 · 2013: 5 · 2012: 4
FWCI
6.64
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of General Medical Sciences (GM18848)
  • National Institute of Neurological Disorders and Stroke (NS-25704, R01NS025704)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
voltage-gated sodium channels, phosphacan, tyrosine phosphorylation, sodium channel inactivation, sodium current, signaling complexes, brain neurons, developmental regulation, catalytic domain
MeSH terms
Animals, Binding Sites, Brain, Carbonic Anhydrases, Cell Line, Cell Membrane, Electric Conductivity, Humans, Nerve Tissue Proteins, Neurons, Phosphorylation, Precipitin Tests, Protein Binding, Chondroitin Sulfate Proteoglycans, Recombinant Fusion Proteins, Sodium, Transfection, Sodium Channels, Ion Channel Gating, Protein Tyrosine Phosphatases, Phosphotyrosine, Protein Isoforms, Catalytic Domain, Rats, Receptor-Like Protein Tyrosine Phosphatases, Class 5

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