Phosphorothioate-Based Site-Specific Labeling of Large RNAs for Structural and Dynamic Studies.
Phosphorothioate-Based Site-Specific Labeling of Large RNAs for Structural and Dynamic Studies.
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基于硫代磷酸酯的大 RNA 位点特异性标记,用于结构和动态研究。
DOI:
10.1021/acschembio.2c00199
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发表时间:
2022-09-16
影响因子:
4
通讯作者:
Fang, Xianyang
中科院分区:
文献类型:
--
作者:
Hu, Yanping;Wang, Yan;Singh, Jaideep;Sun, Ruirui;Xu, Lilei;Niu, Xiaolin;Huang, Keyun;Bai, Guangcan;Liu, Guoquan;Zuo, Xiaobing;Chen, Chunlai;Qin, Peter Z.;Fang, Xianyang
Pulsed electron−electron double resonance (PELDOR) spectroscopy, X-ray scattering interferometry (XSI), and single-molecule Förster resonance energy transfer (smFRET) are molecular rulers that provide inter- or intramolecular pair-wise distance distributions in the nanometer range, thus being ideally suitable for structural and dynamic studies of biomolecules including RNAs. The prerequisite for such applications requires site-specific labeling of biomolecules with spin labels, gold nanoparticles, and fluorescent tags, respectively. Recently, site-specific labeling of large RNAs has been achieved by a combination of transcription of an expanded genetic alphabet containing A-T/G-C base pairs and NaM-TPT3 unnatural base pair (UBP) with post-transcriptional modifications at UBP bases by click chemistry or amine−NHS ester reactions. However, due to the bulky sizes of functional groups or labeling probes used, such strategies might cause structural perturbation and decrease the accuracy of distance measurements. Here, we synthesize an α-thiophosphorylated variant of rTPT3TP (rTPT3αS), which allows for post-transcriptional site-specific labeling of large RNAs at the internal α-phosphate backbone via maleimide-modified probes. Subsequent PELDOR, XSI, and smFRET measurements result in narrower distance distributions than labeling at the TPT3 base. The presented strategy provides a new route to empower the molecular rulers for structural and dynamic studies of large RNA and its complex.
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影响因子:
14.9
作者:
Lebars I;Vileno B;Bourbigot S;Turek P;Wolff P;Kieffer B
通讯作者:
Kieffer B
DOI:
10.1038/s41580-019-0136-0
发表时间:
2019-08
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Ganser LR;Kelly ML;Herschlag D;Al-Hashimi HM
通讯作者:
Al-Hashimi HM
DOI:
10.3390/v3091739
发表时间:
2011-09
期刊:
Viruses
影响因子:
--
作者:
Gebhard LG;Filomatori CV;Gamarnik AV
通讯作者:
Gamarnik AV
影响因子:
3.9
作者:
Barnwal RP;Yang F;Varani G
通讯作者:
Varani G
影响因子:
4
作者:
Hu, Yanping;Wang, Yan;Singh, Jaideep;Sun, Ruirui;Xu, Lilei;Niu, Xiaolin;Huang, Keyun;Bai, Guangcan;Liu, Guoquan;Zuo, Xiaobing;Chen, Chunlai;Qin, Peter Z.;Fang, Xianyang
通讯作者:
Fang, Xianyang