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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Translation initiation of ornithine decarboxylase and nucleocytoplasmic transport of cyclin D1 mRNA are increased in cells overexpressing eukaryotic initiation factor 4E
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Translation initiation of ornithine decarboxylase and nucleocytoplasmic transport of cyclin D1 mRNA are increased in cells overexpressing eukaryotic initiation factor 4E

机译:过量表达真核生物起始因子4E的细胞中鸟氨酸脱羧酶的翻译起始和细胞周期蛋白D1 mRNA的核质转运增加

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摘要

The structure m~7GpppN (where N is any nucleotide), termed cap, is present at the 5' end of all eukaryotic cellular mRNAs (except organellar). The eukary- otic initiation factor 4E (eIF-4E) binds to the cap and facili- tates the formation of translation initiation complexes. eIF-4E is implicated in control of cell growth, as its overexpression causes malignant transformation of rodent cells and deregu- lates HeLa cell growth. It was suggested that overexpression of eIF-4E results in the enhanced translation of poorly trans- lated mRNAs that encode growth-promoting proteins.
机译:m〜7GpppN结构(其中N是任何核苷酸),称为帽,存在于所有真核细胞mRNA(细胞器除外)的5'端。真核起始因子4E(eIF-4E)与帽结合并促进翻译起始复合物的形成。 eIF-4E的表达过高会引起啮齿动物细胞的恶性转化并抑制HeLa细胞的生长,因此它参与了细胞生长的控制。有人认为,eIF-4E的过表达会导致编码促进生长的蛋白质的翻译较差的mRNA的翻译增强。

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