Structure and dynamics of AMPA receptor GluA2 in resting, pre-open, and desensitized states.
Structure and dynamics of AMPA receptor GluA2 in resting, pre-open, and desensitized states.
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AMPA受体GLUA2在休息,预开口和脱敏状态中的结构和动力学。
DOI:
10.1016/j.cell.2014.07.023
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发表时间:
2014-08-14
期刊:
影响因子:
64.5
通讯作者:
Gouaux E
中科院分区:
文献类型:
--
作者:
Dürr KL;Chen L;Stein RA;De Zorzi R;Folea IM;Walz T;Mchaourab HS;Gouaux E
Ionotropic glutamate receptors (iGluRs) mediate the majority of fast excitatory signaling in the nervous system. Despite the profound importance of iGluRs in the nervous system, little is known about the structures and dynamics of intact receptors in distinct functional states. Here we elucidate the structures of the intact GluA2 AMPA receptor in an apo resting/closed state, in an activated/pre-open state bound with the partial agonists and a positive allosteric modulator and in a desensitized/closed state in complex with FW alone. To probe the conformational properties of these states, we carried out double electron-electron resonance experiments on cysteine mutants and cryo-electron microscopy studies. We show how agonist binding modulates the conformation of the ligand binding domain 'layer' of the intact receptors and how, upon desensitization, the receptor undergoes large conformational rearrangements of amino-terminal and ligand-binding domains. We define mechanistic principles by which to understand antagonism, activation and desensitization in AMPA iGluRs.
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影响因子:
16.6
作者:
Dong H;Zhou HX
通讯作者:
Zhou HX
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
作者:
Hohn, Michael;Tang, Grant;Ludtke, Steven J.
通讯作者:
Ludtke, Steven J.
影响因子:
64.5
作者:
Baconguis I;Bohlen CJ;Goehring A;Julius D;Gouaux E
通讯作者:
Gouaux E
影响因子:
16.2
作者:
Armstrong, N;Gouaux, E
通讯作者:
Gouaux, E