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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Differential roles for NSF and GRIP/ABP in AMPA receptor cycling
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Differential roles for NSF and GRIP/ABP in AMPA receptor cycling

机译:NSF和GRIP / ABP在AMPA受体循环中的差异作用

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摘要

α-Amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptor (AMPAR) stability and movement at synapses are important factors controlling synaptic strength. Here, we study the roles of proteins [N-ethylmaleimide-sensitive fusion protein (NSF), glutamate recep- tor AMPAR binding protein (ABP)-interacting protein (GRIP)/(ABP), and protein interacting with C-kinase-1 (PICK1) that interact with the GluR2 subunit in the control of the surface expression and cycling of AMPARs. Epitope-tagged GluR2 formed functional re- ceptors that exhibited targeting to synaptic sites. Constructs in which binding to NSF, PDZ proteins (GRIP/ABP and PICK1), or GRIP/ABP alone was eliminated each exhibited normal surface targeting and constitutive cycling.
机译:α-氨基-3-羟基-5-甲基异恶唑-4-丙酸受体(AMPAR)的稳定性和突触运动是控制突触强度的重要因素。在这里,我们研究蛋白质的作用[N-乙基马来酰亚胺敏感融合蛋白(NSF),谷氨酸受体AMPAR结合蛋白(ABP)相互作用蛋白(GRIP)/(ABP)以及与C激酶-1相互作用的蛋白的作用(PICK1)与GluR2亚基相互作用,控制AMPAR的表面表达和循环。抗原决定簇标记的GluR2形成功能性受体,这些受体表现出对突触位点的靶向作用。消除了与NSF,PDZ蛋白(GRIP / ABP和PICK1)或单独的GRIP / ABP结合的构建体均表现出正常的表面靶向性和本构循环。

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