Triheteromeric GluN1/GluN2A/GluN2C NMDARs with Unique Single-Channel Properties Are the Dominant Receptor Population in Cerebellar Granule Cells.
Triheteromeric GluN1/GluN2A/GluN2C NMDARs with Unique Single-Channel Properties Are the Dominant Receptor Population in Cerebellar Granule Cells.
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DOI:
10.1016/j.neuron.2018.06.010
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发表时间:
2018-07-25
期刊:
影响因子:
16.2
通讯作者:
Traynelis SF
中科院分区:
文献类型:
--
作者:
Bhattacharya S;Khatri A;Swanger SA;DiRaddo JO;Yi F;Hansen KB;Yuan H;Traynelis SF
NMDA-type glutamate receptors (NMDARs) are ligand-gated ion channels that mediate excitatory neurotransmission in the central nervous system (CNS). Here, we describe functional and single channel properties of triheteromeric GluN1/GluN2A/GluN2C receptors, which contain two GluN1, one GluN2A, and one GluN2C subunits. This NMDAR has three conductance levels and opens in bursts similar to GluN1/GluN2A receptors, but with single channel open time and open probability reminiscent of GluN1/GluN2C receptors. The deactivation time course of GluN1/GluN2A/GluN2C receptors is intermediate to GluN1/GluN2A and GluN1/GluN2C receptors and is not dominated by GluN2A or GluN2C. We show that triheteromeric GluN1/GluN2A/GluN2C receptors are the predominant NMDARs in cerebellar granule cells, and propose that co-expression of GluN2A and GluN2C in cerebellar granule cells occludes cell-surface expression of diheteromeric GluN1/GluN2C receptors. This new insight to neuronal GluN1/GluN2A/GluN2C receptors highlights the complexity of NMDAR signaling in the CNS. Bhattacharya et al. show that the NMDA receptor GluN2C subunit is preferentially incorporated into triheteromeric GluN1/GluN2A/GluN2C receptors in cerebellar granule cells. Triheteromeric GluN1/GluN2A/GluN2C receptors have single channel properties that cannot be predicted from the composite subunits.
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DOI:
10.1016/s0169-328x(96)00205-7
发表时间:
1997-03-01
期刊:
MOLECULAR BRAIN RESEARCH
影响因子:
--
作者:
AlGhoul, WM;Meeker, RB;Greenwood, RS
通讯作者:
Greenwood, RS
影响因子:
5.3
作者:
Cathala, L;Misra, C;Cull-Candy, S
通讯作者:
Cull-Candy, S
影响因子:
5.3
作者:
Cai, Lei;Loo, Li Shen;Hong, Wanjin
通讯作者:
Hong, Wanjin
影响因子:
16.2
作者:
CLEMENTS, JD;WESTBROOK, GL
通讯作者:
WESTBROOK, GL
影响因子:
3.3
作者:
Brock, C;Boudier, L;Pin, JP
通讯作者:
Pin, JP