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Science 8 May 1992:
Vol. 256. no. 5058, pp. 839 - 842
DOI: 10.1126/science.256.5058.839

Articles

Science, Vol 256, Issue 5058, 839-842
Copyright © 1992 by American Association for the Advancement of Science


articles

Primary structure and functional expression of the beta 1 subunit of the rat brain sodium channel

LL Isom, KS De Jongh, DE Patton, BF Reber, J Offord, H Charbonneau, K Walsh, AL Goldin, and WA Catterall

Department of Pharmacology, University of Washington, Seattle 98195.

Voltage-sensitive sodium channels are responsible for the initiation and propagation of the action potential and therefore are important for neuronal excitability. Complementary DNA clones encoding the beta 1 subunit of the rat brain sodium channel were isolated by a combination of polymerase chain reaction and library screening techniques. The deduced primary structure indicates that the beta 1 subunit is a 22,851-dalton protein that contains a single putative transmembrane domain and four potential extracellular N-linked glycosylation sites, consistent with biochemical data. Northern blot analysis reveals a 1,400-nucleotide messenger RNA in rat brain, heart, skeletal muscle, and spinal cord. Coexpression of beta 1 subunits with alpha subunits increases the size of the peak sodium current, accelerates its inactivation, and shifts the voltage dependence of inactivation to more negative membrane potentials. These results indicate that the beta 1 subunit is crucial in the assembly, expression, and functional modulation of the heterotrimeric complex of the rat brain sodium channel.


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   Abstract »    Full Text »    PDF »
Hyperkalemic periodic paralysis M1592V mutation modifies activation in human skeletal muscle Na+ channel.
C. V. Rojas, A. Neely, G. Velasco-Loyden, V. Palma, and M. Kukuljan (1999)
Am J Physiol Cell Physiol 276, C259-C266
   Abstract »    Full Text »    PDF »
Interaction of voltage-gated sodium channels with the extracellular matrix molecules tenascin-C and tenascin-R.
J. Srinivasan, M. Schachner, and W. A. Catterall (1998)
PNAS 95, 15753-15757
   Abstract »    Full Text »    PDF »
Mechanistic link between lidocaine block and inactivation probed by outer pore mutations in the rat {micro}1 skeletal muscle sodium channel.
N. G Kambouris, L. A Hastings, S. Stepanovic, E. Marban, G. F Tomaselli, and J. R Balser (1998)
J. Physiol. 512, 693-705
   Abstract »    Full Text »    PDF »
Lidocaine Action on Na+ Currents in Ventricular Myocytes From the Epicardial Border Zone of the Infarcted Heart.
J. Pu, J. R. Balser, and P. A. Boyden (1998)
Circ. Res. 83, 431-440
   Abstract »    Full Text »    PDF »
Modulation of Cardiac Na+ Current Phenotype by ß1-Subunit Expression.
S. Kupershmidt, T. Yang, and D. M. Roden (1998)
Circ. Res. 83, 441-447
   Abstract »    Full Text »    PDF »
Functional Analysis of the Mouse Scn8a Sodium Channel.
M. R. Smith, R. D. Smith, N. W. Plummer, M. H. Meisler, and A. L. Goldin (1998)
J. Neurosci. 18, 6093-6102
   Abstract »    Full Text »    PDF »
Effects of local anesthetics on Na+ channels containing the equine hyperkalemic periodic paralysis mutation.
R. L. Sah, R. G. Tsushima, and P. H. Backx (1998)
Am J Physiol Cell Physiol 275, C389-C400
   Abstract »    Full Text »    PDF »
Novel LQT-3 Mutation Affects Na+ Channel Activity Through Interactions Between {alpha}- and ß1-Subunits.
R. H. An, X. L. Wang, B. Kerem, J. Benhorin, A. Medina, M. Goldmit, and R. S. Kass (1998)
Circ. Res. 83, 141-146
   Abstract »    Full Text »    PDF »
Structure and function of voltage-gated sodium channels.
E. Marban, T. Yamagishi, and G. F Tomaselli (1998)
J. Physiol. 508, 647-657
   Abstract »    Full Text »    PDF »
Multiple effects of KPQ deletion mutation on gating of human cardiac Na+ channels expressed in mammalian cells.
R. Chandra, C. F. Starmer, and A. O. Grant (1998)
Am J Physiol Heart Circ Physiol 274, H1643-H1654
   Abstract »    Full Text »    PDF »
Ion Channels and Early Development of Neural Cells.
K. TAKAHASHI and Y. OKAMURA (1998)
Physiol Rev 78, 307-337
   Abstract »    Full Text »    PDF »
mRNAs coding for neurotransmitter receptors and voltage-gated sodium channels in the adult rabbit visual cortex after monocular deafferentiation.
Q.-T. Nguyen, C. Matute, and R. Miledi (1998)
PNAS 95, 3257-3262
   Abstract »    Full Text »    PDF »
Molecular Determinants of Na+ Channel Function in the Extracellular Domain of the beta 1 Subunit.
K. A. McCormick, L. L. Isom, D. Ragsdale, D. Smith, T. Scheuer, and W. A. Catterall (1998)
J. Biol. Chem. 273, 3954-3962
   Abstract »    Full Text »    PDF »
Functional Analysis of the Rat I Sodium Channel in Xenopus Oocytes.
R. D. Smith and A. L. Goldin (1998)
J. Neurosci. 18, 811-820
   Abstract »    Full Text »    PDF »
A Critical Role for the S4-S5 Intracellular Loop in Domain IV of the Sodium Channel alpha -Subunit in Fast Inactivation.
J. C. McPhee, D. S. Ragsdale, T. Scheuer, and W. A. Catterall (1998)
J. Biol. Chem. 273, 1121-1129
   Abstract »    Full Text »    PDF »



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