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Molecular pharmacology of GABA receptor. Kinya KURIYAMA 1 , Masaaki HIROUCHI 1 , Hiroshi NAKAYASU 1 1Department of Pharmacology, Kyoto Prefectural University of Medicine pp.377-384
Published Date 1993/6/10
DOI https://doi.org/10.11477/mf.1431900335
  • Abstract
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 The receptor for GABA (γ-aminobutyric acid), known as one of inhibitory neurotransmitters in the brain, has been classified in to GABAA and GABAB receptors. GABAA receptor consists of the combination of α, β, γ, δ and ρ subunits and forms GABA gated Cl- channel. The central type of benzodiazepine receptor is associated with GABAA receptor and exhibition of the function of benzodiazepine receptor requires the presence of α, β, and γ subunits. On the other hand, GABAB receptor is known as one of metabotropic receptors and inhibits adenylate cyclase activity and phosphatidylinositol turnover via coupling with the Gi and/or Go type of GTP-binding protein. GABAB receptor purified by the combination of baclofen affinity and immunoaffinity column chromatographic procedures is 80 kDa protein and exhibits the inhibition of adenylate cyclase activity following the reconstitution on phospholipid vesicles with partially purified Gi and Go protein. Recent concepts on the pharmacology of GABAA and GABAB receptors are also reviewed.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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