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Updated: Jul 30, 2025
13:00
A Rapid High-throughput Method for Mapping Ribonucleoproteins RNPs on Human pre-mRNA
Published on: December 2, 2009
11.8K
Nanopore-based RNA sequencing deciphers the formation, processing, and modification steps of rRNA intermediates in
Felix Grünberger1, Michael Jüttner2, Robert Knüppel2
1Institute of Biochemistry, Genetics and Microbiology, Institute of Microbiology and Archaea Centre, Single-Molecule Biochemistry Lab and Regensburg Center for Biochemistry, University of Regensburg, Regensburg, Bavaria 93053, Germany.
RNA (New York, N.Y.)
|May 16, 2023
Summary
This study reveals key insights into ribosomal RNA (rRNA) maturation in archaea using nanopore sequencing. We identified novel intermediates and common processing principles across Euryarchaea and Crenarchaea.
Area of Science:
- Molecular Biology
- Genomics
- Microbiology
Background:
- Ribosomal RNA (rRNA) maturation in archaea is a complex process crucial for protein synthesis.
- Previous technical limitations hindered detailed mapping of rRNA processing pathways.
- Understanding archaeal rRNA maturation is vital for evolutionary and functional insights.
Purpose of the Study:
- To systematically map rRNA maturation pathways in archaea.
- To identify and characterize novel rRNA processing intermediates.
- To compare rRNA processing across different archaeal lineages.
Main Methods:
- Utilized long-read nanopore sequencing (cDNA and direct RNA) for comprehensive rRNA analysis.
- Analyzed terminal read positions to classify rRNA processing intermediates.
- Examined KsgA-mediated dimethylations using direct RNA nanopore sequencing data.
Main Results:
- Accurately detected and described rRNA maturation stages in model archaea.
- Identified previously unknown rRNA intermediates with high confidence.
- Revealed details of archaea-specific circular rRNA intermediate maturation.
- Delineated common and unique rRNA processing features in Euryarchaea and Crenarchaea.
Conclusions:
- Nanopore sequencing provides unprecedented resolution for studying rRNA maturation.
- The study significantly expands the understanding of archaeal rRNA processing.
- Identified conserved and lineage-specific mechanisms in archaeal rRNA biogenesis.
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