A cyclic AMP-activated K+ channel in Drosophila larval muscle is persistently activated in dunce.
basic_science · Level V
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- Record sourced from PubMed, PMID 1846445.
- Also identified by PMC identifier 50850.
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Abstract
Single-channel recording from longitudinal ventrolateral Drosophila larval muscle reveals the presence of a potassium-selective channel that is directly and reversibly activated by cAMP in a dose-dependent fashion. Activation is specific and it cannot be mimicked by a series of agents that include AMP, cGMP, ATP, inositol trisphosphate, and Ca2+. Channel current records obtained from larval muscle in different dunce mutants possessing abnormally high levels of cAMP show that, in the mutants, the channel displays an increased probability of opening.
Medical subject headings
- Cyclic AMP
- Drosophila
- Muscles
- Potassium Channels