2-Selenouridine triphosphate synthesis and Se-RNA transcription.

2-Selenouridine triphosphate synthesis and Se-RNA transcription.
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DOI:
10.1261/rna.038075.112
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发表时间:
2013-09
期刊:
RNA (New York, N.Y.)
影响因子:
--
通讯作者:
Huang Z
Huang Z
中科院分区:
其他
文献类型:
--
作者:
Sun H;Jiang S;Caton-Williams J;Liu H;Huang Z

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本文报道了通过2-硒化尿嘧啶三磷酸(SeUTP)合成和RNA转录酶法合成2-硒化尿嘧啶。SeUTP被证明是稳定的,并被T7 RNA聚合酶识别。2-硒脲啶(SeU)是Se-tRNAs (SeU- rna)在反密码子环摆动位置的天然修饰之一。它在RNA-RNA相互作用中的作用,特别是在mRNA解码过程中,是难以捉摸的。为了协助研究探索,本文报道了通过2-硒化尿苷三磷酸(SeUTP)合成和RNA转录酶法合成SeU-RNA。此外,我们已经证明合成的SeUTP是稳定的,并被T7 RNA聚合酶识别。在优化条件下,SeU-RNA的转录率可达相应天然RNA的85%。此外,转录的seu -锤头核酶与相应的天然核酶具有相似的活性,这表明seu - rna在包括se - trna在内的非编码rna的功能和结构研究中是有用的。
The enzymatic synthesis of 2-selenouridine via 2-selenouridine triphosphate (SeUTP) synthesis and RNA transcription is reported. SeUTP is shown to be stable and recognizable by T7 RNA polymerase. 2-Selenouridine (SeU) is one of the naturally occurring modifications of Se-tRNAs (SeU-RNA) at the wobble position of the anticodon loop. Its role in the RNA-RNA interaction, especially during the mRNA decoding, is elusive. To assist the research exploration, herein we report the enzymatic synthesis of the SeU-RNA via 2-selenouridine triphosphate (SeUTP) synthesis and RNA transcription. Moreover, we have demonstrated that the synthesized SeUTP is stable and recognizable by T7 RNA polymerase. Under the optimized conditions, the transcription yield of SeU-RNA can reach up to 85% of the corresponding native RNA. Furthermore, the transcribed SeU-hammerhead ribozyme has the similar activity as the corresponding native, which suggests usefulness of SeU-RNAs in function and structure studies of noncoding RNAs, including the Se-tRNAs.
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