Phase Transition in Postsynaptic Densities Underlies Formation of Synaptic Complexes and Synaptic Plasticity.
Phase Transition in Postsynaptic Densities Underlies Formation of Synaptic Complexes and Synaptic Plasticity.
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突触后密度的相变是突触复合体和突触可塑性形成的基础。
DOI:
10.1016/j.cell.2016.07.008
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发表时间:
2016-08-25
期刊:
影响因子:
64.5
通讯作者:
Zhang M
中科院分区:
文献类型:
--
作者:
Zeng M;Shang Y;Araki Y;Guo T;Huganir RL;Zhang M
Postsynaptic densities (PSDs) are membrane semienclosed, submicron protein-enriched cellular compartments beneath postsynaptic membranes, which constantly exchange their components with bulk aqueous cytoplasm in synaptic spines. Formation and activity-dependent modulation of PSDs is considered as one of the most basic molecular events governing synaptic plasticity in the nervous system. In this study, we discover that SynGAP, one of the most abundant PSD proteins and a Ras/Rap GTPase activator, forms a homo-trimer and binds to multiple copies of PSD-95. Binding of SynGAP to PSD-95 induces phase separation of the complex, forming highly concentrated liquid-like droplets reminiscent of the PSD. The multivalent nature of the SynGAP/ PSD-95 complex is critical for the phase separation to occur and for proper activity-dependent SynGAP dispersions from the PSD. In addition to revealing a dynamic anchoring mechanism of SynGAP at the PSD, our results also suggest a model for phase-transition-mediated formation of PSD.
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影响因子:
4.4
作者:
Lowenthal MS;Markey SP;Dosemeci A
通讯作者:
Dosemeci A
影响因子:
16.2
作者:
Bosch M;Castro J;Saneyoshi T;Matsuno H;Sur M;Hayashi Y
通讯作者:
Hayashi Y
DOI:
10.1083/jcb.136.3.669
发表时间:
1997-02-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kim E;Naisbitt S;Hsueh YP;Rao A;Rothschild A;Craig AM;Sheng M
通讯作者:
Sheng M
DOI:
10.1073/pnas.1416515111
发表时间:
2014-12-09
影响因子:
11.1
作者:
Li, Youjun;Wei, Zhiyi;Zhang, Mingjie
通讯作者:
Zhang, Mingjie
DOI:
10.1073/pnas.1517045112
发表时间:
2015-12-15
影响因子:
11.1
作者:
Chen, Xiaobing;Levy, Jonathan M.;Reese, Thomas S.
通讯作者:
Reese, Thomas S.