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2D-HELS MS Seq: A General LC-MS-Based Method for Direct and de novo Sequencing of RNA Mixtures with Different Nucleotide Modifications
Published on: July 10, 2020
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Locating chemical modifications in RNA sequences through ribonucleases and LC-MS based analysis
Priti Thakur1, Scott Abernathy1, Patrick A Limbach1
1Rieveschl Laboratories for Mass Spectrometry, Department of Chemistry, University of Cincinnati, Cincinnati, OH, United States.
Methods in Enzymology
|September 14, 2021
Summary
Understanding RNA structure is key to its function. This study details biochemical and analytical methods, including ribonucleases and liquid chromatography-mass spectrometry, for characterizing modified RNA sequences.
Area of Science:
- Biochemistry and Molecular Biology
- RNA Biology
- Analytical Chemistry
Background:
- Post-transcriptional modifications are crucial for non-coding RNA (ncRNA) function, including ribosomal RNA (rRNA), transfer RNA (tRNA), and viral RNAs.
- Diverse and dense modifications in cellular and viral RNAs necessitate advanced characterization techniques.
- Structural insights are fundamental to deciphering the functional roles of modified RNAs.
Purpose of the Study:
- To present a comprehensive overview of methodologies for characterizing modified RNA.
- To highlight the importance of structural information in understanding RNA function.
- To provide protocols and strategies for confident modified RNA sequencing.
Main Methods:
- Utilizing a combination of biochemical and analytical tools.
- Employing ribonucleases for RNA digestion and analysis.
- Applying liquid chromatography coupled with mass spectrometry (LC-MS) for precise characterization.
Main Results:
- Demonstrated protocols for identifying and sequencing modified RNA bases.
- Established strategies for obtaining reliable modified sequence information.
- Facilitated deeper understanding of RNA modifications through structural data.
Conclusions:
- Integrated biochemical and analytical approaches are effective for modified RNA characterization.
- Accurate structural information of modified RNA is essential for functional studies.
- The presented methods and strategies aid in advancing RNA biology research.
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