PKA-mediated phosphorylation of Neuroligin-2 regulates its cell surface expression and synaptic stabilisation
PKA-mediated phosphorylation of Neuroligin-2 regulates its cell surface expression and synaptic stabilisation
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PKA 介导的 Neuroligin-2 磷酸化调节其细胞表面表达和突触稳定
DOI:
10.1101/2020.07.23.218008
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Halff E
中科院分区:
文献类型:
--
作者:
Halff E
The trans-synaptic adhesion molecule Neuroligin-2 (NL2) is essential for the development and function of inhibitory synapses. NL2 recruits the postsynaptic scaffold protein gephyrin, which in turn stabilises GABAAreceptors (GABAARs) in the postsynaptic domain. Dynamic regulation of synaptic GABAAR concentration is crucial for inhibitory neurotransmission efficacy. Changes in synaptic levels of NL2 contribute to regulating GABAAR synaptic concentration, however the mechanisms that control NL2 synaptic stabilisation are mostly unknown. Here, by combining biochemistry, imaging, single particle tracking and electrophysiology, we identify a key role for cAMP-dependent protein kinase (PKA) in synaptic stabilisation of NL2. We show that PKA-mediated phosphorylation of NL2 at S714 causes its dispersal from the synapse and reduces NL2 surface levels, leading to a loss of synaptic GABAARs. Conversely, enhanced stability of NL2 at synapses through abolishing phosphorylation leads to increased inhibitory signalling. Thus, PKA plays a key role in regulating NL2 function and synaptic inhibition.
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影响因子:
3.9
作者:
Vithlani M;Moss SJ
通讯作者:
Moss SJ
DOI:
10.1073/pnas.0506653102
发表时间:
2005-10-11
影响因子:
11.1
作者:
Kittler, JT;Chen, GJ;Moss, SJ
通讯作者:
Moss, SJ
影响因子:
16.2
作者:
Poulopoulos, Alexandros;Aramuni, Gayane;Varoqueaux, Frederique
通讯作者:
Varoqueaux, Frederique
DOI:
10.1201/9780203486283.ch6
发表时间:
2006
期刊:
--
影响因子:
--
作者:
I. Arancibia-Carcamo;B. Fairfax;S. Moss;J. Kittler
通讯作者:
I. Arancibia-Carcamo;B. Fairfax;S. Moss;J. Kittler
DOI:
10.1073/pnas.80.10.2926
发表时间:
1983-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
DAVIS, FM;TSAO, TY;RAO, PN
通讯作者:
RAO, PN