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Monitoring Equilibrium Changes in RNA Structure by 'Peroxidative' and 'Oxidative' Hydroxyl Radical Footprinting
Published on: October 17, 2011
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Massive parallel-sequencing-based hydroxyl radical probing of RNA accessibility.
Lukasz Jan Kielpinski1, Jeppe Vinther
1Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200 Copenhagen N, Denmark.
Nucleic Acids Research
|February 27, 2014
Summary
Hydroxyl Radical Footprinting with Sequencing (HRF-Seq) offers a high-throughput method to map RNA structure and protein interactions. This technique accurately determines ribose accessibility, improving upon traditional methods.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Hydroxyl Radical Footprinting (HRF) analyzes RNA tertiary structure and protein-RNA interactions.
- Current HRF methods use single-primer reverse transcription and capillary electrophoresis, limiting throughput.
- Ribose accessibility is determined by detecting reverse transcriptase termination sites.
Purpose of the Study:
- To develop an accurate, high-throughput sequencing-based method for Hydroxyl Radical Footprinting (HRF-Seq).
- To enable parallel analysis of multiple RNAs or experimental conditions.
- To improve the resolution and efficiency of RNA structure probing.
Main Methods:
- Developed HRF-Seq, a massive parallel-sequencing-based approach for probing RNA accessibility.
- Utilized random priming and a novel barcoding scheme for enhanced throughput.
- Applied HRF-Seq to analyze ribose accessibility in *Escherichia coli* 16S rRNA.
Main Results:
- HRF-Seq significantly increases the throughput of HRF experiments.
- The method facilitates parallel analysis of multiple RNAs or conditions.
- HRF-Seq data for *E. coli* 16S rRNA shows high correlation with X-ray crystallography data for ribose accessible surface area.
- Achieved resolution distinguishes accessibility differences on RNA helices.
Conclusions:
- HRF-Seq is an accurate and efficient method for probing RNA accessibility and structure.
- The technique enhances the capabilities of Hydroxyl Radical Footprinting for structural biology.
- HRF-Seq provides a powerful tool for studying RNA-protein interactions and complex RNA structures.
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