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The GABA Receptor-Chloride Ion Channel Protein Complex

  • R. W. Olsen
  • M. Bureau
  • R. W. Ransom
  • L. Deng
  • A. Dilber
  • G. Smith
  • M. Krestchatisky
  • A. J. Tobin
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 236)

Abstract

The majority of inhibitory synaptic transmission in the central nervous system involves γ-aminobutyric acid (GABA) as the neurotransmitter (1). The signal transduction mechanism at the majority of GABA synapses involves a ligand-gated chloride channel; binding of GABA to its receptor increases postsynaptic membrane chloride conductance and inhibits the target cell (2). This GABA receptor, called GABAA, is defined pharmacologically by sensitivity to the agonist muscimol anä the antagonist bicuculline (3). At least one other type of GABA receptor exists, GABAB, defined as insensitive to bicuculline and sensitive to baclofen; GKBAB receptors are coupled to GTP-binding proteins for a variety of signal transduction mechanisms (4). GABAA receptor function is also modulated by at least three classes of centrally active drugs, the picrotoxin-like convulsants, that inhibit GABA function, and the benzodiazepines and the barbiturates, both of which enhance GABA function (5).

Keywords

GABAA Receptor Gaba Receptor Photoaffinity Label Antagonist Bicuculline Gaba Binding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • R. W. Olsen
    • 1
  • M. Bureau
    • 1
  • R. W. Ransom
    • 1
  • L. Deng
    • 1
  • A. Dilber
    • 1
  • G. Smith
    • 1
  • M. Krestchatisky
    • 2
  • A. J. Tobin
    • 2
  1. 1.Department of Pharmacology and Brain Research InstituteUniversity of CaliforniaLos AngelesUSA
  2. 2.Department of Biology and Brain Research InstituteUniversity of CaliforniaLos AngelesUSA

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