SAP102 mediates synaptic clearance of NMDA receptors.
SAP102 mediates synaptic clearance of NMDA receptors.
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DOI:
10.1016/j.celrep.2012.09.024
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发表时间:
2012-11-29
期刊:
影响因子:
8.8
通讯作者:
Roche KW
中科院分区:
文献类型:
--
作者:
Chen BS;Gray JA;Sanz-Clemente A;Wei Z;Thomas EV;Nicoll RA;Roche KW
Membrane-associated guanylate kinases (MAGUKs) are the major family of scaffolding proteins at the postsynaptic density. The PSD-MAGUK subfamily, which includes PSD-95, PSD-93, SAP97 and SAP102, is well accepted to be primarily involved in the synaptic anchoring of numerous proteins, including N-methyl-D-aspartate receptors (NMDARs). Notably, the synaptic targeting of NMDARs depends on the binding of the PDZ ligand on the GluN2B subunit to MAGUK PDZ domains as disruption of this interaction dramatically decreases NMDAR surface and synaptic expression. We recently reported a secondary interaction between SAP102 and GluN2B, in addition to the PDZ interaction. Here, we identify two critical residues on GluN2B responsible for the non-PDZ binding to SAP102. Strikingly, either mutation of these critical residues or knock-down of endogenous SAP102 can rescue the defective surface expression and synaptic localization of PDZ binding-deficient GluN2B. These data reveal an unexpected, non-scaffolding role for SAP102 in the synaptic clearance of GluN2B-containing NMDARs.
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DOI:
10.1523/jneurosci.4457-06.2007
发表时间:
2007-03-07
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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作者:
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通讯作者:
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发表时间:
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期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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作者:
Chen BS;Thomas EV;Sanz-Clemente A;Roche KW
通讯作者:
Roche KW
影响因子:
25
作者:
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通讯作者:
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影响因子:
16.2
作者:
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