JCB logo
Accuri Cytometers
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

Published 23 July 2001. doi:10.1083/jcb.200102086
This Article
Right arrow Full Text
Right arrow Full Text (PDF, 228K)
Right arrow PPT slides of all figures
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JCB
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ratcliffe, C. F.
Right arrow Articles by Catterall, W. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ratcliffe, C. F.
Right arrow Articles by Catterall, W. A.
Right arrowPubmed/NCBI databases
*Gene*GEO Profiles
*HomoloGene*Protein
*UniGene
*Substance via MeSH
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?

© The Rockefeller University Press, 0021-9525/2001/7/427 $5.00
The Journal of Cell Biology, Volume 154, Number 2, July 23, 2001 427-434


Article

Sodium channel ß1 and ß3 subunits associate with neurofascin through their extracellular immunoglobulin-like domain



Charlotte F. Ratcliffe1, Ruth E. Westenbroek1, Rory Curtis2 and William A. Catterall1

1 Department of Pharmacology, University of Washington, Seattle, WA 98195
2 Millennium Pharmaceuticals, Cambridge, MA 02139

Address correspondence to William A. Catterall, Department of Pharmacology R-189, University of Washington, HSC, Box 357280, F-427, Seattle, WA 98195-7280. Tel.: (206) 543-1925. Fax: (206) 543-3882. E-mail: wcatt{at}u.washington.edu

Sequence homology predicts that the extracellular domain of the sodium channel ß1 subunit forms an immunoglobulin (Ig) fold and functions as a cell adhesion molecule. We show here that ß1 subunits associate with neurofascin, a neuronal cell adhesion molecule that plays a key role in the assembly of nodes of Ranvier. The first Ig-like domain and second fibronectin type III–like domain of neurofascin mediate the interaction with the extracellular Ig-like domain of ß1, confirming the proposed function of this domain as a cell adhesion molecule. ß1 subunits localize to nodes of Ranvier with neurofascin in sciatic nerve axons, and ß1 and neurofascin are associated as early as postnatal day 5, during the period that nodes of Ranvier are forming. This association of ß1 subunit extracellular domains with neurofascin in developing axons may facilitate recruitment and concentration of sodium channel complexes at nodes of Ranvier.

Key Words: sodium channel; neurofascin; neural cell adhesion molecules; nodes of Ranvier; protein binding


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents