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首页> 外文期刊>The European Journal of Neuroscience >Distribution of transcripts for the brain-specific GDP/GTP exchange factor collybistin in the developing mouse brain.
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Distribution of transcripts for the brain-specific GDP/GTP exchange factor collybistin in the developing mouse brain.

机译:发育中的小鼠大脑中特定于大脑的GDP / GTP交换因子collybistin的转录本分布。

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摘要

The dbl-like GDP/GTP exchange factor, collybistin, binds to the receptor anchoring protein gephyrin and activates the Rho-like GTPase Cdc42. Collybistin was found in two splice variants I and II, both of which share a tandem Dbl homology/pleckstrin homology (DH/PH) domain. In heterologous expression systems, collybistin II induces the formation of submembraneous gephyrin aggregates and therefore has been implicated in inhibitory synapse formation. Expression of collybistin is restricted to neuronal tissues and is predominantly found in brain. Here, we investigated the spatio-temporal distribution of collybistin transcripts in the embryonic mouse brain and compared it to gephyrin and glycine receptor mRNA patterns. Our data show that collybistin expression is upregulated when neurons become postmitotic and start to differentiate.
机译:dbl样GDP / GTP交换因子collybistin与受体锚蛋白gephyrin结合并激活Rho样GTPase Cdc42。在两个剪接变体I和II中发现了双翘素,它们均具有串联的Dbl同源性/ pleckstrin同源性(DH / PH)结构域。在异源表达系统中,collybistin II诱导形成膜下的gephyrin聚集体,因此与抑制突触的形成有关。鞘磷脂的表达限于神经元组织,并且主要存在于大脑中。在这里,我们调查了胚胎小鼠大脑中的胶体双素转录本的时空分布,并将其与gephyrin和甘氨酸受体mRNA模式进行了比较。我们的数据显示,当神经元变为有丝分裂后并开始分化时,结肠双素表达被上调。

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