The kinesin KIF21B participates in the cell surface delivery of γ2 subunit-containing GABAA receptors.

The kinesin KIF21B participates in the cell surface delivery of γ2 subunit-containing GABAA receptors.
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驱动蛋白 KIF21B 参与含有 γ2 亚基的 GABAA 受体的细胞表面递送

DOI:
10.1016/j.ejcb.2014.07.007
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发表时间:
2014
影响因子:
6.6
通讯作者:
Kneussel M
Kneussel M
中科院分区:
生物学3区
文献类型:
--
作者:
Labonté D;Thies E;Kneussel M

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KIF21B是一种驱动蛋白家族(KIF)蛋白,是一种正末端导向的微管马达。KIF21B基因在神经元组织和脾脏中高度表达,是多发性硬化症的易感基因座。KIF21 B运动性通过TRIM 3调节,TRIM 3是参与囊泡受体再循环的细胞因子相关再循环或转运(CART)复合物的成员。我们发现GABA A受体γ2亚基与KIF21B在培养的海马神经元中共沉淀并共定位。通过小发夹(sh)RNA敲低KIF21 B基因表达可减少神经突和细胞表面含γ2亚基的GABAAR(GABAAR)簇的数量。我们的数据表明,KIF21 B参与GABAAR转运囊泡到树突的交付。
KIF21B, a kinesin family (KIF) protein, is a plus end-directed microtubule motor. TheKIF21Bgene is highly expressed in neuronal tissue and spleen and is a susceptibility locus for multiple sclerosis. KIF21B motility is regulated through TRIM3, a member of the cytoskeleton-associated-recycling or transport (CART) complex, involved in vesicular receptor recycling. Here we show that the GABAAreceptor γ2-subunit co-precipitates and co-localizes with KIF21B in cultured hippocampal neurons. Knockdown of KIF21B gene expression through small hairpin (sh) RNA reduces the number of γ2-subunit-containing GABAAreceptor (GABAARs) clusters in neurites and at the cell surface. Our data suggest that KIF21B participates in the delivery of GABAAR transport vesicles into dendrites.
快照:塑料突触的受体动力学
DOI: 10.1016/j.cell.2014.06.002
发表时间: 2014
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影响因子: 64.5
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