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RNApasta: a tool for analysis of RNA structural alignments
Russell L Malmberg1, Timothy I Shaw, Liming Cai
1Department of Plant Biology, University of Georgia, Athens, GA 30602, USA. russell@plantbio.uga.edu
Summary
RNA sequence structural alignments are key for noncoding RNA characterization. RNApasta, a new Java program, aids in RNA alignment analysis and editing, revealing evolutionary insights into RNA loop variations.
Area of Science:
- Bioinformatics
- Molecular Biology
- Computational Biology
Background:
- Characterizing noncoding RNAs (ncRNAs) relies heavily on RNA sequence structural alignment.
- Understanding variations in RNA structures, like stem and loop lengths, is crucial for functional insights.
Purpose of the Study:
- To introduce RNApasta, a Java program designed for RNA sequence structural alignment analysis and editing.
- To provide tools for generating statistics, modeling RNAs, and identifying homogeneous subsets of alignments with variability.
- To enable detailed characterization of structural variations, including stem and loop lengths, and their phylogenetic implications.
Main Methods:
- Development of RNApasta, a Java program featuring a graphical user interface.
- Implementation of functions for statistical analysis of RNA alignments.
- Inclusion of tools for analyzing variation in stem and loop lengths.
- Application of phylogenetic analysis to study structural variation.
Main Results:
- RNApasta facilitates the analysis and editing of RNA alignments.
- The program can generate statistics for RNA modeling and identify subsets of alignments with variability.
- Analysis of mir-31 pre-microRNA loop length variation revealed a single evolutionary origin for longer loops.
Conclusions:
- RNApasta is a valuable tool for RNA sequence structural alignment analysis and editing.
- The software aids in understanding RNA variability and evolutionary history.
- Specific structural features, such as loop lengths, can provide insights into evolutionary origins.
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