The N-terminal domain of GluR6-subtype glutamate receptor ion channels.
The N-terminal domain of GluR6-subtype glutamate receptor ion channels.
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DOI:
10.1038/nsmb.1613
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发表时间:
2009-06
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
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The amino terminal domain of glutamate receptor ion channels, which controls their selective assembly into AMPA, kainate and NMDA receptor subtypes, is also the site of action of NMDA receptor allosteric modulators. Here we report the crystal structure of the ATD from the kainate receptor GluR6. The ATD forms dimers in solution at micromolar protein concentrations and crystallizes as a dimer. Unexpectedly, each subunit adopts an intermediate extent of domain closure compared to the apo and ligand bound complexes of LIVBP and G-Protein coupled glutamate receptors, and the dimer assembly has a strikingly different conformation from that found in mGluRs. This conformation is stabilized by contacts between large hydrophobic patches in the R2 domain which are absent in NMDA receptors, suggesting that the ATDs of individual glutamate receptor ion channels have evolved into functionally distinct families.
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DOI:
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发表时间:
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影响因子:
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通讯作者:
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发表时间:
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影响因子:
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通讯作者:
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