The many roles of the eukaryotic elongation factor 1 complex.

The many roles of the eukaryotic elongation factor 1 complex.
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DOI:
10.1002/wrna.1118
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发表时间:
2012-07
影响因子:
7.3
通讯作者:
Kinzy, Terri Goss
Kinzy, Terri Goss
中科院分区:
生物学2区
文献类型:
--
作者:
Sasikumar, Arjun N.;Perez, Winder B.;Kinzy, Terri Goss

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绝大多数蛋白质被认为具有一种特定的功能。然而,在整个进化过程中,一些蛋白质已经获得了额外的功能,以满足复杂细胞环境的需求。在某些情况下,RNA或蛋白质加工的变化允许细胞充分利用基因组中已经编码的物质,以产生略微不同的形式。然而,真核延伸因子1(eEF 1)复合物亚基已经获得了这种兼职功能,而没有替代形式。在这里,我们讨论了典型的功能的eEF 1复合物的组件在翻译延伸以及二次相互作用,他们与其他细胞因子外的翻译装置。eEF 1复合物本身的组成随着真核生物复杂性的增加而变化。复合物的成员也受到磷酸化,一个潜在的调制器的典型和非典型的功能。虽然eEF1A亚基的替代功能已被广泛报道,但最近的研究正在阐明eEF1B亚基的其他功能。深入了解eEF 1的这些替代功能对于了解其生物学相关性至关重要。
The vast majority of proteins are believed to have one specific function. Throughout the course of evolution, however, some proteins have acquired additional functions to meet the demands of a complex cellular milieu. In some cases changes in RNA or protein processing allow the cell to make the most of what is already encoded in the genome to produce slightly different forms. The eukaryotic Elongation Factor 1 (eEF1) complex subunits, however, have acquired such moonlighting functions without alternative forms. Here, we discuss the canonical functions of the components of the eEF1 complex in translation elongation as well as the secondary interactions they have with other cellular factors outside of the translational apparatus. The eEF1 complex itself changes in composition as the complexity of eukaryotic organisms increases. Members of the complex are also subject to phosphorylation, a potential modulator of both canonical and non-canonical functions. Although alternative functions of the eEF1A subunit have been widely reported, recent studies are shedding light on additional functions of the eEF1B subunits. A thorough understanding of these alternate functions of eEF1 is essential for appreciating their biological relevance.
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