Ori-Finder-3

Ori-Finder-3 predicts replication origins (ARSs) in Saccharomyces cerevisiae by analyzing genomic DNA sequence features to map replication initiation sites.

Key Features:

• Z-curve Methodology: Implements the Z-curve method to analyze DNA sequence characteristics for origin prediction.
• Single-Nucleotide Prediction Accuracy: Predicts ARSs at single-nucleotide resolution by identifying AT-rich stretches and ARS consensus sequences.
• High Predictive Performance: Validated on the Saccharomyces cerevisiae reference genome, matching 83% of the top 100 predictions and 60% of the top 300 predictions to known ARS records.
• Comprehensive Database: Compiles predicted ARSs from over one hundred Saccharomyces cerevisiae genomes to support comparative analyses.

Scientific Applications:

• Genomic Stability Studies: Characterizes distribution and features of replication origins to investigate mechanisms of genomic stability and instability in Saccharomyces cerevisiae.
• Comparative Genomics: Enables comparative analysis of predicted ARSs across multiple S. cerevisiae strains to study evolutionary variation and strain-specific differences.
• Functional Genomics: Identifies candidate replication origins in uncharacterized genomes to aid functional annotation and study of genome organization.

Methodology:

Applies the Z-curve analysis to genomic DNA sequences, detects AT-rich stretches and ARS consensus sequences for single-nucleotide origin prediction, validates predictions against known ARS records in the S. cerevisiae reference genome, and aggregates predicted ARSs across >100 genomes into a database.