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首页> 外文期刊>Biochemistry >Controlling human immunodeficiency virus type 1 gene expression by unnatural peptides.
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Controlling human immunodeficiency virus type 1 gene expression by unnatural peptides.

机译:通过非天然肽控制人免疫缺陷病毒1型基因的表达。

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摘要

Small unnatural peptides that target specific RNA structures have the potential to control biological processes. RNA-protein interactions are important in many cellular functions, including transcription, RNA splicing, and translation. One example of such interactions is the mechanism of trans-activation of human immunodeficiency virus type 1 (HIV-1) gene expression that requires the interaction of Tat protein with the trans-activation responsive region (TAR) RNA, a 59-base stem-loop structure located at the 5'-end of all nascent HIV-1 transcripts. We report here a synthetic peptide derived from Tat sequence (37-72), containing all D-amino acids, that binds in the major groove of TAR RNA and interferes with transcriptional activation by Tat protein in vitro and in HeLa cells. Our results indicate that unnatural peptides can inhibit the transcription of specific genes regulated by RNA-protein interactions.
机译:靶向特定RNA结构的小的非天然肽具有控制生物过程的潜力。 RNA-蛋白质相互作用在许多细胞功能中都很重要,包括转录,RNA剪接和翻译。此类相互作用的一个例子是人类免疫缺陷病毒1型(HIV-1)基因表达的反式激活机制,该机制要求Tat蛋白与反式激活响应区(TAR)RNA(59个碱基的干细胞)相互作用。环结构位于所有新生HIV-1转录本的5'末端。我们在这里报告了一个合成的肽,其衍生自Tat序列(37-72),包含所有D-氨基酸,该肽结合在TAR RNA的主要沟槽中,并在体外和HeLa细胞中干扰Tat蛋白的转录激活。我们的结果表明,非天然肽可以抑制受RNA-蛋白质相互作用调节的特定基因的转录。

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