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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7000
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pubmed:dateCreated |
1987-2-25
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pubmed:abstractText |
Neurotransmitters modulate the activity of ion channels through a variety of second messengers, including cyclic AMP, cyclic GMP and the products of phosphatidylinositol breakdown. Little is known about how different transmitters acting through different second-messenger systems interact within a cell to regulate single ion channels. We here describe the reciprocal actions of serotonin and the molluscan neuropeptide, FMRFamide, on individual K+ channels in Aplysia sensory neurons. In these cells, serotonin causes prolonged all-or-none closure of a class of background conductance K+ channels (the S channels) through cAMP-dependent protein phosphorylation. Using single-channel recording, we have found that FMRFamide produces two actions on the S channels; it increases the probability of opening of the S channels via a cAMP-independent second-messenger system and it reverses the closures of S channels produced by serotonin or cAMP.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Cyclic AMP,
http://linkedlifedata.com/resource/pubmed/chemical/FMRFamide,
http://linkedlifedata.com/resource/pubmed/chemical/Ion Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Nerve Tissue Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium,
http://linkedlifedata.com/resource/pubmed/chemical/Serotonin
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pubmed:status |
MEDLINE
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pubmed:issn |
0028-0836
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
325
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
153-6
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2433600-Animals,
pubmed-meshheading:2433600-Aplysia,
pubmed-meshheading:2433600-Cyclic AMP,
pubmed-meshheading:2433600-Electric Conductivity,
pubmed-meshheading:2433600-FMRFamide,
pubmed-meshheading:2433600-Ganglia,
pubmed-meshheading:2433600-Ion Channels,
pubmed-meshheading:2433600-Membrane Potentials,
pubmed-meshheading:2433600-Nerve Tissue Proteins,
pubmed-meshheading:2433600-Neural Inhibition,
pubmed-meshheading:2433600-Neurons,
pubmed-meshheading:2433600-Potassium,
pubmed-meshheading:2433600-Serotonin
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pubmed:articleTitle |
Neuronal inhibition by the peptide FMRFamide involves opening of S K+ channels.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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