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Serotonin and cyclic AMP close single K+ channels in Aplysia sensory neurones

Serotonin and cyclic AMP close single K+ channels in Aplysia sensory neurones We have identified a serotonin-sensitive K+ channel with novel properties. The channel is active at the resting potential; its gating is moderately affected by membrane potential and is not dependent on the activity of intracellular calcium ions. Application of serotonin to the cell body or intracellular injection of cyclic AMP causes prolonged and complete closure of the channel, thereby reducing the effective number of active channels in the membrane. The closure of the channel can account for the increases in the duration of the action potential, Ca2+ influx, and transmitter release which underlie behavioural sensitization, a simple form of learning. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

Serotonin and cyclic AMP close single K+ channels in Aplysia sensory neurones

Nature , Volume 299 (5882) – Sep 30, 1982

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References (26)

Publisher
Springer Journals
Copyright
Copyright © 1982 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/299413a0
Publisher site
See Article on Publisher Site

Abstract

We have identified a serotonin-sensitive K+ channel with novel properties. The channel is active at the resting potential; its gating is moderately affected by membrane potential and is not dependent on the activity of intracellular calcium ions. Application of serotonin to the cell body or intracellular injection of cyclic AMP causes prolonged and complete closure of the channel, thereby reducing the effective number of active channels in the membrane. The closure of the channel can account for the increases in the duration of the action potential, Ca2+ influx, and transmitter release which underlie behavioural sensitization, a simple form of learning.

Journal

NatureSpringer Journals

Published: Sep 30, 1982

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