Staggering of subunits in NMDAR channels.

Staggering of subunits in NMDAR channels.
复制标题

NMDAR 通道中亚基的交错。

DOI:
10.1016/s0006-3495(02)75331-9
复制
发表时间:
2002
期刊:
Biophysical journal.
影响因子:
--
通讯作者:
Wollmuth,LonnieP
Wollmuth,LonnieP
中科院分区:
--
文献类型:
--
作者:
Sobolevsky,AlexanderI;Rooney,LeeAnn;Wollmuth,LonnieP

文献摘要

参考文献

被引文献

相似文献

功能性N-甲基-d-天冬氨酸受体(NMDAR)是由NR 1和NR 2亚基形成的异多聚体。由NR 1贡献的M3片段形成细胞外前庭的核心,包括通道阻断剂的结合位点,并且代表配体结合和通道开放之间的关键分子连接。利用取代的半胱氨酸可及性方法沿着通道阻断和多价配位,我们研究了NR 2C中M3片段对细胞外前庭的贡献。我们发现NR 2C中的M3段与NR 1中的M3段一样,对细胞外前庭的核心起作用。然而,来自两个子单元的M3段在通道的垂直轴上相对于彼此交错。与NR 1相比,NR 2C中的同源位置,包括高度保守的SYTANLAAF基序中的同源位置,位于更外部约4个氨基酸。亚基的交错可能代表了NMDAR独特功能特性的关键结构特征。
FunctionalN-methyl-d-aspartate receptors (NMDARs) are heteromultimers formed by NR1 and NR2 subunits. The M3 segment, as contributed by NR1, forms the core of the extracellular vestibule, including binding sites for channel blockers, and represents a critical molecular link between ligand binding and channel opening. Taking advantage of the substituted cysteine accessibility method along with channel block and multivalent coordination, we studied the contribution of the M3 segment in NR2C to the extracellular vestibule. We find that the M3 segment in NR2C, like that in NR1, contributes to the core of the extracellular vestibule. However, the M3 segments from the two subunits are staggered relative to each other in the vertical axis of the channel. Compared to NR1, homologous positions in NR2C, including those in the highly conserved SYTANLAAF motif, are located about four amino acids more externally. The staggering of subunits may represent a key structural feature underlying the distinct functional properties of NMDARs.
DOI: 10.1523/jneurosci.19-24-10611.1999
发表时间: 1999-12-15
影响因子: 5.3
作者:
Sobolevsky, AI;Koshelev, SG;Khodorov, BI
通讯作者: Khodorov, BI
有机阳离子开放 NMDA 通道的双组分阻断动力学。
DOI: 10.1016/s0005-2736(98)00211-9
发表时间: 1999
期刊: Biochimica et biophysica acta
影响因子: --
作者:
A. Sobolevsky
通讯作者: A. Sobolevsky
DOI: 10.1126/science.280.5369.1596
发表时间: 1998-06-05
期刊: SCIENCE
影响因子: 56.9
作者:
Rosenmund, C;Stern-Bach, Y;Stevens, CF
通讯作者: Stevens, CF
DOI: 10.1113/jphysiol.1995.sp020591
发表时间: 1995-03-01
影响因子: 5.5
作者:
BENVENISTE, M;MAYER, ML
通讯作者: MAYER, ML
DOI: 10.1113/jphysiol.1996.sp021257
发表时间: 1996
期刊: The Journal of Physiology
影响因子: --
作者:
L. Wollmuth;T. Kuner;P. Seeburg;B. Sakmann
通讯作者: B. Sakmann