The BCL-2 5' untranslated region contains an RNA G-quadruplex-forming motif that modulates protein expression.

The BCL-2 5' untranslated region contains an RNA G-quadruplex-forming motif that modulates protein expression.
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Bcl-2 5'未翻译区包含调节蛋白质表达的RNA G四链体形成基序。

DOI:
10.1021/bi100957h
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发表时间:
2010-09-28
期刊:
影响因子:
2.9
通讯作者:
Balasubramanian, Shankar
Balasubramanian, Shankar
中科院分区:
生物学3区
文献类型:
--
作者:
Shahid, Ramla;Bugaut, Anthony;Balasubramanian, Shankar

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Bcl-2基因编码一个25 kDa的膜蛋白,在细胞凋亡的调控中起着关键作用。Bcl2基因表达的调控是高度复杂的,在转录和转录后都有发生。特别是,bcl-2的5‘上游区域包含许多控制其表达的元件。我们已经确定了一个高度保守的25核苷酸富含G序列(BCL2Q),它有可能折叠成RNAG-四链结构,位于人BCL-2翻译起始点上游42个核苷酸。在这项研究中,我们使用了一系列的生物物理实验来证明BCL2Q序列在体外折叠成一个稳定的RNA G-四链,并且我们在无细胞裂解物和三种类型的人类细胞系中进行了基于功能荧光素酶报告的分析,以证明BCL2Q序列在bcl2的493个核苷酸的天然5‘非翻译区的背景下调节蛋白质的表达。
The BCL-2 gene encodes a 25 kDa membrane protein that plays critical roles in the control of apoptosis. The regulation of BCL-2 gene expression is highly complex and occurs both transcriptionally and posttranscriptionally. In particular, the 5′ upstream region of BCL-2 contains a number of elements that control its expression. We have identified a highly conserved 25-nucleotide G-rich sequence (BCL2Q), with potential to fold into a RNA G-quadruplex structure, located 42 nucleotides upstream of the translation start site of human BCL-2. In this study, we used a series of biophysical experiments to show that the BCL2Q sequence folds into a stable RNA G-quadruplex in vitro, and we conducted functional luciferase reporter-based assays, in a cell-free lysate and in three types of human cell lines, to demonstrate that the BCL2Q sequence modulates protein expression in the context of the 493-nucleotide native 5′ untranslated region of BCL-2.
DOI: 10.1093/nar/gkq563
发表时间: 2010-11
影响因子: 14.9
作者:
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发表时间: 1992-01-28
期刊: BIOCHEMISTRY
影响因子: 2.9
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