RNA Duplex Map in Living Cells Reveals Higher-Order Transcriptome Structure.

RNA Duplex Map in Living Cells Reveals Higher-Order Transcriptome Structure.
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DOI:
10.1016/j.cell.2016.04.028
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发表时间:
2016-05-19
期刊:
影响因子:
64.5
通讯作者:
Chang HY
Chang HY
中科院分区:
生物学1区
文献类型:
--
作者:
Lu Z;Zhang QC;Lee B;Flynn RA;Smith MA;Robinson JT;Davidovich C;Gooding AR;Goodrich KJ;Mattick JS;Mesirov JP;Cech TR;Chang HY

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RNA has the intrinsic property to base pair, forming complex structures fundamental to its diverse functions. Here we develop PARIS, a method based on reversible psoralen-crosslinking for global mapping of RNA duplexes with near base-pair resolution in living cells. PARIS analysis in three human and mouse cell types reveals frequent long-range structures, higher order architectures, and RNA:RNA interactions in trans across the transcriptome. PARIS determines base-pairing interactions on an individual-molecule level, revealing pervasive alternative conformations. We used PARIS-determined helices to guide phylogenetic analysis of RNA structures, and discovered conserved long-range and alternative structures. XIST, a lncRNA essential for X chromosome inactivation, folds into evolutionarily conserved RNA structural domains that span many kilobases. XIST A-repeat forms complex inter-repeat duplexes that nucleate higher order assembly of the key epigenetic silencing protein SPEN. PARIS is a generally applicable and versatile method that provides novel insights into the RNA structurome and interactome.
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