BiDiBlast: comparative genomics pipeline for the PC.

Area of Science:

• Bioinformatics
• Computational Biology
• Genomics

Background:

• Bi-directional BLAST is a valuable method for identifying orthologous and paralogous sequences.
• Traditional Perl scripts for bi-directional BLAST are often OS-specific and require complex setup.
• Limitations in portability and accessibility hinder the widespread use of existing bi-directional BLAST tools.

Purpose of the Study:

• To develop a cross-platform Java application for bi-directional BLAST analysis.
• To simplify the detection, annotation, and analysis of orthologous and paralogous sequences.
• To provide an accessible tool for comparative genomics and molecular evolution studies.

Main Methods:

• Implementation of a Java data pipeline for automated sequence analysis.
• Integration with local NCBI BLAST tool for sequence similarity searches.
• Refinement of BLAST hits, GO Slim term annotation, statistical derivation, and molecular evolution rate estimation using PAML.

Main Results:

• A functional Java application capable of performing bi-directional BLAST analysis.
• Generation of delimited text tables containing analyzed sequence data and statistics.
• A graphical user interface (GUI) for enhanced user interaction and accessibility.

Conclusions:

• The developed Java pipeline overcomes the limitations of traditional script-based approaches.
• The application provides a user-friendly and portable solution for ortholog and paralog detection.
• The tool facilitates downstream analysis in comparative genomics and molecular evolution research.