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Related Experiment Videos

PDA: a pipeline to explore and estimate polymorphism in large DNA databases.

Sònia Casillas1, Antonio Barbadilla

  • 1Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.

Nucleic Acids Research
|June 25, 2004
PubMed
Summary

This study introduces Pipeline Diversity Analysis (PDA), a novel software tool that automates the exploration and estimation of nucleotide polymorphism and genetic diversity within large DNA databases. PDA facilitates comprehensive analysis of sequence variations across different genes, populations, and species.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Molecular Evolution

Background:

  • Polymorphism studies are crucial in the current genomic era.
  • Existing tools lack automation for exploring and estimating nucleotide polymorphism in large DNA databases.

Purpose of the Study:

  • To introduce a novel software, Pipeline Diversity Analysis (PDA).
  • To automate the search for polymorphic sequences and estimate genetic diversity in large DNA databases.

Main Methods:

  • PDA is a modular Perl-based software package.
  • It automatically classifies, aligns (ClustalW), and regroups sequences based on similarity.
  • Estimates key diversity parameters: polymorphism, synonymous/non-synonymous substitutions, linkage disequilibrium, and codon bias.

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Main Results:

  • PDA automates the identification of polymorphic sequences and genetic diversity estimation.
  • Provides comprehensive analysis for full-length sequences and specific functional regions.
  • Outputs include a database, HTML summary statistics, alignments, and a histogram tool.

Conclusions:

  • PDA is an essential tool for exploring nucleotide polymorphism in large DNA databases.
  • It supports analysis across diverse genes, populations, and species.
  • PDA has been successfully applied to create secondary databases.