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首页> 外文期刊>EMBO Journal >Mouse disabled (mDab1): a Src binding protein implicated in neuronal development.
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Mouse disabled (mDab1): a Src binding protein implicated in neuronal development.

机译:禁用鼠标(mDab1): Src结合蛋白与神经发展。

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摘要

Here, we identify a mouse homolog of the Drosophila Disabled (Dab) protein, mDab1, and show it is an adaptor molecule functioning in neural development. We find that mDab1 is expressed in certain neuronal and hematopoietic cell lines, and is localized to the growing nerves of embryonic mice. During mouse embryogenesis, mDab1 is tyrosine phosphorylated when the nervous system is undergoing dramatic expansion. However, when nerve tracts are established, mDab1 lacks detectable phosphotyrosine. Tyrosine-phosphorylated mDab1 associates with the SH2 domains of Src, Fyn and Abl. An interaction between mDab1 and Src is observed when P19 embryonal carcinoma (EC) cells undergo differentiation into neuronal cell types. mDab1 can also form complexes with cellular phosphotyrosyl proteins through a domain that is related to the phosphotyrosine binding (PTB) domains of the Shc family of adaptor proteins. The mDab1 PTB domain binds to phosphotyrosine-containing proteins of 200, 120 and 40 kDa from extracts of embryonic mouse heads. The properties of mDab1 and genetic analysis of Dab in Drosophila suggest that these molecules function in key signal transduction pathways involved in the formation of neural networks.
机译:在这里,我们确定一个鼠标的相同器官果蝇残疾(Dab)蛋白质、mDab1和显示它是一个衔接分子功能神经发展。表示在某些神经和造血细胞系,是日益增长的本地化胚胎小鼠的神经。胚胎发生,mDab1酪氨酸磷酸化当神经系统正在经历戏剧性扩张。建立,mDab1缺乏检测phosphotyrosine。同事的SH2域Src,菲英岛和Abl。观察到当P19胚胎性癌(EC)细胞经历分化为神经细胞。mDab1与细胞也可以形成复合物通过域phosphotyrosyl蛋白质有关phosphotyrosine绑定(PTB)人体自燃现象领域的适配器蛋白质的家庭。mDab1 PTB域结合200年phosphotyrosine-containing蛋白质,120和40 kDa胚胎提取的老鼠正面。民建联在果蝇表明这些分析信号转导分子功能的关键通路参与神经的形成网络。

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