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. 1998 Aug 3;17(15):4283-90.
doi: 10.1093/emboj/17.15.4283.

A mammalian two pore domain mechano-gated S-like K+ channel

A J Patel  1 , E Honoré, F Maingret, F Lesage, M Fink, F Duprat, M Lazdunski
Affiliations

A mammalian two pore domain mechano-gated S-like K+ channel

A J Patel et al. EMBO J. .

Abstract

Aplysia S-type K+ channels of sensory neurons play a dominant role in presynaptic facilitation and behavioural sensitization. They are closed by serotonin via cAMP-dependent phosphorylation, whereas they are opened by arachidonic acid, volatile general anaesthetics and mechanical stimulation. We have identified a cloned mammalian two P domain K+ channel sharing the properties of the S channel. In addition, the recombinant channel is opened by lipid bilayer amphipathic crenators, while it is closed by cup-formers. The cytoplasmic C-terminus contains a charged region critical for chemical and mechanical activation, as well as a phosphorylation site required for cAMP inhibition.

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References

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