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Updated: Aug 12, 2025

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Published on: December 9, 2022
Evolutionary Conservation of RNA Secondary Structure
1Bioinformatics Group, Department of Computer Science, and Interdisciplinary Center for Bioinformatics, University of Leipzig, Leipzig, Germany.
Detecting positive selection in noncoding RNAs (ncRNAs) is challenging. This study presents methods to find species-specific ncRNA structures within conserved groups, aiding in the detection of positive selection.
Area of Science:
- Bioinformatics
- Molecular Biology
- Evolutionary Biology
Background:
- Noncoding RNAs (ncRNAs) fold into functional structures essential for cellular processes.
- Evolutionary conservation of ncRNA structures and functions is driven by selective pressures.
- Existing methods focus on conserved structures, potentially overlooking species-specific adaptations.
Purpose of the Study:
- To develop and present protocols for detecting positive selection in ncRNA structures.
- To identify species-specific structural variations within conserved ncRNA groups.
- To provide bioinformatic tools for analyzing positive selection in ncRNAs.
Main Methods:
- Utilizing the Structure-Specific Selection (SSS)-test.
- Employing free bioinformatics software for analysis.
- Comparing ncRNA structures across evolutionarily related species to identify divergence.
Main Results:
- Protocols are provided for detecting positive selection in ncRNA structures.
- The methods allow for the identification of species-specific ncRNA structures.
- Analysis can reveal instances of positive selection acting on ncRNA evolution.
Conclusions:
- Detecting positive selection in ncRNAs requires identifying species-specific structural changes.
- The SSS-test and associated software offer a viable approach to this challenge.
- This work facilitates a deeper understanding of ncRNA evolution and adaptation.
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