Inverted repeat Alu elements in the human lincRNA-p21 adopt a conserved secondary structure that regulates RNA function.

Inverted repeat Alu elements in the human lincRNA-p21 adopt a conserved secondary structure that regulates RNA function.
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DOI:
10.1093/nar/gkw599
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发表时间:
2016-11-02
影响因子:
14.9
通讯作者:
Pyle AM
Pyle AM
中科院分区:
生物学2区
文献类型:
--
作者:
Chillón I;Pyle AM

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LincRNA-p21 是一种长基因间非编码 RNA (lincRNA),参与 p53 介导的应激反应。我们对人类 lincRNA-p21 (hLincRNA-p21) 进行了测序,发现它有一个包含反向重复 Alu 元件 (IRAlus) 的外显子。正义和反义 Alu 元件彼此独立地折叠成灵长类动物 lincRNA-p21 中保守的二级结构。此外,IRAlus 形成的结构参与 hLincRNA-p21 在细胞核中的定位,其中 hLincRNA-p21 与 paraspeckles 共定位。我们的结果强调了 IRAlus 结构对于应激反应期间 hLincRNA-p21 功能的重要性。
LincRNA-p21 is a long intergenic non-coding RNA (lincRNA) involved in the p53-mediated stress response. We sequenced the human lincRNA-p21 (hLincRNA-p21) and found that it has a single exon that includes inverted repeat Alu elements (IRAlus). Sense and antisense Alu elements fold independently of one another into a secondary structure that is conserved in lincRNA-p21 among primates. Moreover, the structures formed by IRAlus are involved in the localization of hLincRNA-p21 in the nucleus, where hLincRNA-p21 colocalizes with paraspeckles. Our results underscore the importance of IRAlus structures for the function of hLincRNA-p21 during the stress response.
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