Comparison of SHAPE reagents for mapping RNA structures inside living cells
- 1Center for Personal Dynamic Regulomes, Stanford University, Stanford, California 94305, USA
- 2Department of Chemistry, Stanford University, Stanford, California 94305, USA
- Corresponding authors: howchang{at}stanford.edu, kool{at}stanford.edu
Abstract
Recent advances in SHAPE technology have converted the classic primer extension method to next-generation sequencing platforms, allowing transcriptome-level analysis of RNA secondary structure. In particular, icSHAPE and SHAPE-MaP, using NAI-N3 and 1M7 reagents, respectively, are methods that claim to measure in vivo structure with high-throughput sequencing. However, these compounds have not been compared on an unbiased, raw-signal level. Here, we directly compare several in vivo SHAPE acylation reagents using the simple primer extension assay. We conclude that while multiple SHAPE technologies are effective at measuring purified RNAs in vitro, acylimidazole reagents NAI and NAI-N3 give markedly greater signals with lower background than 1M7 for in vivo measurement of the RNA structurome.
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Footnotes
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Article is online at http://www.rnajournal.org/cgi/doi/10.1261/rna.058784.116.
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Freely available online through the RNA Open Access option.
- Received August 17, 2016.
- Accepted November 20, 2016.
This article, published in RNA, is available under a Creative Commons License (Attribution 4.0 International), as described at http://creativecommons.org/licenses/by/4.0/.
