M current mystery messenger revealed?
- PMID: 12165463
- DOI: 10.1016/s0896-6273(02)00792-4
M current mystery messenger revealed?
Abstract
The identity of signaling elements that couple muscarinic acetylcholine receptor (mAChR) activation to M current (KCNQ K(+) channels) modulation has remained unknown despite decades of study. Suh and Hille (in this issue of Neuron) demonstrate that activation of phospholipase C (PLC) initiates M current modulation and that recovery requires ATP and phosphoinositide 4-kinase (PI 4-K). These data suggest that breakdown of phosphotidylinositol 4,5-bisphosphate (PIP(2)) is a crucial determinant of M channel modulation.
Comment on
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Recovery from muscarinic modulation of M current channels requires phosphatidylinositol 4,5-bisphosphate synthesis.Neuron. 2002 Aug 1;35(3):507-20. doi: 10.1016/s0896-6273(02)00790-0. Neuron. 2002. PMID: 12165472
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