Architecture and assembly mechanism of native glycine receptors.
Architecture and assembly mechanism of native glycine receptors.
复制标题
天然甘氨酸受体的结构和装配机理。
DOI:
10.1038/s41586-021-04022-z
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发表时间:
2021-11
期刊:
影响因子:
64.8
通讯作者:
Gouaux E
中科院分区:
文献类型:
--
作者:
Zhu H;Gouaux E
Glycine receptors (GlyRs) are pentameric, ‘Cys-loop’ receptors that form chloride-permeable channels and mediate fast inhibitory signaling throughout the central nervous system. In the spinal cord and brainstem, GlyRs regulate locomotion and cause movement disorders when mutated. However, the stoichiometry of native GlyRs and the mechanism by which they are assembled remain unclear, despite extensive investigation. Here we report near-atomic resolution structures of native GlyRs from porcine spinal cord and brainstem, revealing the first structural insight into heteromeric receptors and their predominant stoichiometry of 4 α subunits:1 β subunit. Within the heteromeric pentamer, the β(+)/α(−) interface adopts a structure that is distinct from the α(+)/α(−) and α(+)/β(−) interfaces. Furthermore, the β subunit harbors a unique phenylalanine residue that resides within the pore and disrupts the canonical picrotoxin site. These results explain why inclusion of the β subunit breaks receptor symmetry and alters ion channel pharmacology. We also find incomplete receptor complexes and, by elucidating their structures, reveal the architectures of partially assembled α trimers and α tetramers for the first time.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
3.6
作者:
Kloda, Jessica Holden;Czajkowski, Cynthia
通讯作者:
Czajkowski, Cynthia
影响因子:
64.5
作者:
GREEN, WN;CLAUDIO, T
通讯作者:
CLAUDIO, T
影响因子:
14.8
作者:
通讯作者:
--
DOI:
10.1107/s2059798318006551
发表时间:
2018-06-01
期刊:
Acta crystallographica. Section D, Structural biology
影响因子:
--
作者:
Afonine PV;Poon BK;Read RJ;Sobolev OV;Terwilliger TC;Urzhumtsev A;Adams PD
通讯作者:
Adams PD