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Science 5 December 1986:
Vol. 234. no. 4781, pp. 1261 - 1265
DOI: 10.1126/science.2430334

Articles

Science, Vol 234, Issue 4781, 1261-1265
Copyright © 1986 by American Association for the Advancement of Science


articles

A G protein couples serotonin and GABAB receptors to the same channels in hippocampus

R Andrade, RC Malenka, and RA Nicoll

Both serotonin and the selective gamma-aminobutyric acidB (GABAB) agonist, baclofen, increase potassium (K+) conductance in hippocampal pyramidal cells. Although these agonists act on separate receptors, the potassium currents evoked by the agonists are not additive, indicating that the two receptors share the same potassium channels. Experiments with hydrolysis-resistant guanosine triphosphate (GTP) and guanosine diphosphate analogs and pertussis toxin indicate that the opening of the potassium channels by serotonin and GABAB receptors involves a pertussis toxin-sensitive GTP-binding (G) protein, which may directly couple the two receptors to the potassium channel.


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Two Types of Identified Ascending Interneurons With Distinct GABA Receptors in the Crayfish Terminal Abdominal Ganglion.
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GABAB Receptors, Monoamine Receptors, and Postsynaptic Inositol Trisphosphate-Induced Ca2+ Release Are Involved in the Induction of Long-Term Potentiation at Visual Cortical Inhibitory Synapses.
Y. Komatsu (1996)
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GABAB Receptor-Activated Inwardly Rectifying Potassium Current in Dissociated Hippocampal CA3 Neurons.
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Metabotropic Glutamate Receptors Activate G-Protein-Coupled Inwardly Rectifying Potassium Channels in Xenopus Oocytes.
J. A. Saugstad, T. P. Segerson, and G. L. Westbrook (1996)
J. Neurosci. 16, 5979-5985
   Abstract »    Full Text »    PDF »
Expression of the Human 5-Hydroxytryptamine[IMAGE] Receptor in Sf9 Cells.
P. Butkerait, Y. Zheng, H. Hallak, T. E. Graham, H. A. Miller, K. D. Burris, P. B. Molinoff, and D. R. Manning (1995)
J. Biol. Chem. 270, 18691-18699
   Abstract »    Full Text »    PDF »
A pertussis toxin-sensitive G protein in hippocampal long-term potentiation.
J. Goh and P. Pennefather (1989)
Science 244, 980-983
   Abstract »    PDF »
Newly identified brain potassium channels gated by the guanine nucleotide binding protein Go.
A. VanDongen, J Codina, J Olate, R Mattera, R Joho, L Birnbaumer, and A. Brown (1988)
Science 242, 1433-1437
   Abstract »    PDF »
The coupling of neurotransmitter receptors to ion channels in the brain.
R. Nicoll (1988)
Science 241, 545-551
   Abstract »    PDF »
Molecular characterization of a functional cDNA encoding the serotonin 1c receptor.
D Julius, A. MacDermott, R Axel, and T. Jessell (1988)
Science 241, 558-564
   Abstract »    PDF »
Somatostatin augments the M-current in hippocampal neurons.
S. Moore, S. Madamba, M Joels, and G. Siggins (1988)
Science 239, 278-280
   Abstract »    PDF »
Nonselective cation conductance activated by muscarinic and purinergic receptors in rat spiral ganglion neurons.
K. Ito and D. Dulon (2002)
Am J Physiol Cell Physiol 282, C1121-C1135
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Science. ISSN 0036-8075 (print), 1095-9203 (online)