A chemical probe based on the PreQ(1) metabolite enables transcriptome-wide mapping of binding sites.
A chemical probe based on the PreQ(1) metabolite enables transcriptome-wide mapping of binding sites.
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基于PreQ(1)代谢物的化学探针能够在转录组范围内定位结合位点。
DOI:
10.1038/s41467-021-25973-x
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发表时间:
2021-10-06
影响因子:
16.6
通讯作者:
Schneekloth JS Jr
中科院分区:
文献类型:
--
作者:
Balaratnam S;Rhodes C;Bume DD;Connelly C;Lai CC;Kelley JA;Yazdani K;Homan PJ;Incarnato D;Numata T;Schneekloth JS Jr
The role of metabolite-responsive riboswitches in regulating gene expression in bacteria is well known and makes them useful systems for the study of RNA-small molecule interactions. Here, we study the PreQ1 riboswitch system, assessing sixteen diverse PreQ1-derived probes for their ability to selectively modify the class-I PreQ1 riboswitch aptamer covalently. For the most active probe (11), a diazirine-based photocrosslinking analog of PreQ1, X-ray crystallography and gel-based competition assays demonstrated the mode of binding of the ligand to the aptamer, and functional assays demonstrated that the probe retains activity against the full riboswitch. Transcriptome-wide mapping using Chem-CLIP revealed a highly selective interaction between the bacterial aptamer and the probe. In addition, a small number of RNA targets in endogenous human transcripts were found to bind specifically to 11, providing evidence for candidate PreQ1 aptamers in human RNA. This work demonstrates a stark influence of linker chemistry and structure on the ability of molecules to crosslink RNA, reveals that the PreQ1 aptamer/ligand pair are broadly useful for chemical biology applications, and provides insights into how PreQ1, which is similar in structure to guanine, interacts with human RNAs. The small modified nucleotide PreQ1 binds to the PreQ1 riboswitch and regulates gene expression by inducing RNA conformation change. Here the authors design and characterize a specific preQ1-derived probe by x-ray crystallography, mass spectral analysis and transcriptome-wide using Chem-CLIP.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
15
作者:
Alexander, Seth C.;Busby, Kayla N.;Devaraj, Neal K.
通讯作者:
Devaraj, Neal K.
影响因子:
15
作者:
Gao, Jinxu;Mfuh, Adelphe;Woo, Christina M.
通讯作者:
Woo, Christina M.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
DOI:
10.1126/science.1215063
发表时间:
2012-01-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Baker JL;Sudarsan N;Weinberg Z;Roth A;Stockbridge RB;Breaker RR
通讯作者:
Breaker RR