Directional mRNA transport in eukaryotes: lessons from yeast

Directional mRNA transport in eukaryotes: lessons from yeast
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真核生物中的定向 mRNA 运输:酵母的教训

DOI:
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发表时间:
2006
影响因子:
8
通讯作者:
D. Niessing
D. Niessing
中科院分区:
生物学1区
文献类型:
--
作者:
Marisa Müller;Alexander Heuck;D. Niessing

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摘要。在真核生物中,发育过程和细胞分化以及基本的细胞功能都需要以不对称的方式传播信息。mRNA的定位是细胞不对称命运形成的关键机制。本综述的第一部分概述了我们目前对真核生物中运动蛋白依赖的mRNA转运的了解。第二部分更详细地描述了迄今为止研究最全面的mRNA易位复合物:来自酿酒酵母的ASH1信使核糖核蛋白颗粒(mRNP)。在酵母出芽过程中,ASH1 mRNP将细胞命运决定因素独家转运到子细胞中。已经确定了ASH1 mRNP的核心因子,详细研究了它们之间的相互作用,并确定了其mrna结合蛋白She2p的三维结构。由于没有其他mRNP被如此详细地研究过,ASH1 mRNP可以作为高等真核生物细胞命运决定因素不对称分离的模型。
Abstract.In eukaryotes, developmental processes and cell differentiation, as well as basic cellular functions require the propagation of information in an asymmetric manner. Localization of mRNA is a key mechanism to establish asymmetric cell fate. The first part of this review provides an overview of our current knowledge of motor protein-dependent mRNA transport in eukaryotes. The second part provides a more detailed description of the most comprehensively studied mRNA translocation complex to date: the ASH1 messenger ribonucleoprotein particle (mRNP) from Saccharomyces cerevisiae. During budding of yeast, the ASH1 mRNP transports cell fate determinants exclusively into the daughter cell. The core factors of the ASH1 mRNP have been identified, their interactions have been studied in detail, and the three-dimensional structure of its mRNA-binding protein, She2p, has been determined. Because no other mRNP has been studied in such detail, the ASH1 mRNP could serve as a model for asymmetric segregation of cell fate determinants in higher eukaryotes.
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