Quantitative Characterization of α6 and α1α6 Subunit-containing Native γ-Aminobutyric AcidA Receptors of Adult Rat Cerebellum Demonstrates Two α Subunits per Receptor Oligomer
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منابع مشابه
Rat and Human Hippocampal a5 Subunit-Containing g- Aminobutyric AcidA Receptors Have a5b3g2 Pharmacological Characteristics
The g-aminobutyric acid (GABA)A receptor is a hetero-oligomer consisting of five subunits, the combination of which confers unique pharmacological properties to the receptor. To understand the physiological role of native GABAA receptors, it is critical to determine their subunit compositions. The pharmacological characteristics of human a5b3g2 and a5b3g3 GABAA receptors stably expressed in L(t...
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Uterine contractions at parturition depend upon a variety of factors, including gamma-aminobutyric acid (GABA)-ergic stimulation. A new subunit of the GABA(A) receptor, pi, has recently been identified as being particularly abundant in the rat uterus. Reduced derivatives of progesterone, such as the 3alpha,5alpha-reduced derivative termed allopregnanolone, modulate GABA(A) receptor activity and...
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We evaluated whether tolerance to the antagonism of bicuculine-induced seizures by diazepam is associated with changes (i) in the content of mRNAs encoding for gamma-aminobutyric acidA (GABAA) receptor subunits, (ii) in the expression density of these subunits, and (iii) in the 1,4-benzodiazepine binding site characteristics in discrete neocortical structures. We found that in diazepam-tolerant...
متن کاملSubunit composition and quantitative importance of hetero-oligomeric receptors: GABAA receptors containing alpha6 subunits.
In cerebellum, GABAA receptors containing alpha6 subunits are expressed exclusively in granule cells. The number of alpha6 receptor subtypes formed in these cells and their subunit composition presently are not known. Immunoaffinity chromatography on alpha6 subunit-specific antibodies indicated that 45% of GABAA receptors in cerebellar extracts contained alpha6 subunits. Western blot analysis d...
متن کاملCompounds Exhibiting Selective Efficacy for Different Subunits of Human Recombinant -Aminobutyric AcidA Receptors
Inhibitory GABAA receptor modulators are widely used therapeutic agents for a variety of central nervous system disorders. Ltk cells stably expressing human recombinant GABAA subunits ( 1 1–3 2s) were seeded into 96-well plates, loaded with chlorocoumarin-2-dimyristoyl phosphatidylethanolamine and bis(1,3-diethyl-2-thiobarbiturate)trimethineoxonol, and rapid fluorescence resonance energy transf...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1995
ISSN: 0021-9258
DOI: 10.1074/jbc.270.36.21285