SUMOylation silences heterodimeric TASK potassium channels containing K2P1 subunits in cerebellar granule neurons.
SUMOylation silences heterodimeric TASK potassium channels containing K2P1 subunits in cerebellar granule neurons.
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DOI:
10.1126/scisignal.2003431
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发表时间:
2012-11-20
影响因子:
7.3
通讯作者:
Goldstein SA
中科院分区:
文献类型:
--
作者:
Plant LD;Zuniga L;Araki D;Marks JD;Goldstein SA
The standing outward K+ current (IKso) governs the response of cerebellar granule neurons to natural and medicinal stimuli including volatile anesthetics. In this study, we showed that sumoylation silenced half of IKso at the surface of cerebellar granule neurons because the underlying channels were heterodimeric assemblies of K2P1, a subunit subject to sumoylation, and the two P domain, acid-sensitive K+ (TASK) channel subunits, K2P3 or K2P9. The heteromeric channels comprised the acid-sensitive portion of IKso and mediated its response to halothane. We anticipate that sumoylation also influences sensation and homeostatic mechanisms in mammals through TASK channels formed with K2P1.
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