Neuronal cotransport of glycine receptor and the scaffold protein gephyrin.
Neuronal cotransport of glycine receptor and the scaffold protein gephyrin.
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DOI:
10.1083/jcb.200506066
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发表时间:
2006-01-30
期刊:
影响因子:
--
通讯作者:
Kneussel M
中科院分区:
文献类型:
--
作者:
Maas C;Tagnaouti N;Loebrich S;Behrend B;Lappe-Siefke C;Kneussel M
The dynamics of postsynaptic receptor scaffold formation and remodeling at inhibitory synapses remain largely unknown. Gephyrin, which is a multimeric scaffold protein, interacts with cytoskeletal elements and stabilizes glycine receptors (GlyRs) and individual subtypes of γ-aminobutyric acid A receptors at inhibitory postsynaptic sites. We report intracellular mobility of gephyrin transports packets over time. Gephyrin units enter and exit active synapses within several minutes. In addition to previous reports of GlyR–gephyrin interactions at plasma membranes, we show cosedimentation and coimmunoprecipitation of both proteins from vesicular fractions. Moreover, GlyR and gephyrin are cotransported within neuronal dendrites and further coimmunoprecipitate and colocalize with the dynein motor complex. As a result, the blockade of dynein function or dynein–gephyrin interaction, as well as the depolymerization of microtubules, interferes with retrograde gephyrin recruitment. Our data suggest a GlyR–gephyrin–dynein transport complex and support the concept that gephyrin–motor interactions contribute to the dynamic and activity-dependent rearrangement of postsynaptic GlyRs, a process thought to underlie the regulation of synaptic strength.
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影响因子:
25
作者:
Essrich, C;Lorez, M;Lüscher, B
通讯作者:
Lüscher, B
影响因子:
25
作者:
Fischer, M;Kaech, S;Matus, A
通讯作者:
Matus, A
影响因子:
5.3
作者:
Kneussel, M;Brandstätter, JH;Betz, H
通讯作者:
Betz, H
DOI:
10.1083/jcb.139.2.469
发表时间:
1997-10-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Burkhardt JK;Echeverri CJ;Nilsson T;Vallee RB
通讯作者:
Vallee RB
影响因子:
4.8
作者:
King, SM;Barbarese, E;Pfister, KK
通讯作者:
Pfister, KK