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How protons shape AMPA receptor structure, function and diffusion at the synapse
Nature Structural & Molecular Biology ( IF 12.5 ) Pub Date : 2024-08-13 , DOI: 10.1038/s41594-024-01371-x


The extracellular AMPA receptor N-terminal domain (NTD) affects synaptic strength by tuning receptor diffusion. We reveal that pH fluctuations accompanying synaptic activity alter NTD conformation of the functionally dominant GluA2 subunit, via proton sensing by an NTD histidine residue, thereby increasing gating kinetics and receptor diffusion at the synapse.

中文翻译:


质子如何塑造 AMPA 受体的结构、功能和突触扩散



细胞外 AMPA 受体 N 末端结构域 (NTD) 通过调节受体扩散来影响突触强度。我们揭示了伴随突触活动的 pH 波动,通过 NTD 组氨酸残基的质子感应改变了功能显性 GluA2 亚基的 NTD 构象,从而增加了突触处的门控动力学和受体扩散。
更新日期:2024-08-13
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