Convergent effects of multiple modulators on two-pore-domain 'leak' potassium channels in respiratory-related neurons
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چکیده
منابع مشابه
Formation of Functional Heterodimers by TREK-1 and TREK-2 Two-pore Domain Potassium Channel Subunits.
Two-pore domain (K2P) potassium channels are the major molecular correlates of the background (leak) K(+) current in a wide variety of cell types. They generally play a key role in setting the resting membrane potential and regulate the response of excitable cells to various stimuli. K2P channels usually function as homodimers, and only a few examples of heteromerization have been previously re...
متن کاملTASK-1, a Two–Pore Domain K+ Channel, Is Modulated by Multiple Neurotransmitters in Motoneurons
Inhibition of "leak" potassium (K+) channels is a widespread CNS mechanism by which transmitters induce slow excitation. We show that TASK-1, a two pore domain K+ channel, provides a prominent leak K+ current and target for neurotransmitter modulation in hypoglossal motoneurons (HMs). TASK-1 mRNA is present at high levels in motoneurons, including HMs, which express a K+ current with pH- and vo...
متن کاملTASK-3 two-pore domain potassium channels enable sustained high-frequency firing in cerebellar granule neurons.
The ability of neurons, such as cerebellar granule neurons (CGNs), to fire action potentials (APs) at high frequencies during sustained depolarization is usually explained in relation to the functional properties of voltage-gated ion channels. Two-pore domain potassium (K(2P)) channels are considered to simply hyperpolarize the resting membrane potential (RMP) by increasing the potassium permea...
متن کاملThe Effects of Buthotus schach Scorpion Venom on Electrophysiological Properties of Magnocellular Neurons of Rat Supraoptic Nucleus
Potassium channels are trans-membrane proteins, which selectively transport K+ ions across cell membranes and play a key role in regulating the physiology of excitability cells and signal transduction pathways. Bothutous Schach (BS) scorpion venom consists of several polypeptides that could modulate ion channels. In this study, the effects of BS crude venom on passive and active electrophysiolo...
متن کاملThe Effects of Buthotus schach Scorpion Venom on Electrophysiological Properties of Magnocellular Neurons of Rat Supraoptic Nucleus
Potassium channels are trans-membrane proteins, which selectively transport K+ ions across cell membranes and play a key role in regulating the physiology of excitability cells and signal transduction pathways. Bothutous Schach (BS) scorpion venom consists of several polypeptides that could modulate ion channels. In this study, the effects of BS crude venom on passive and active electrophysiolo...
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عنوان ژورنال:
دوره 2 شماره
صفحات -
تاریخ انتشار 2001