P4P

P4P performs comparative analysis of peptidome-derived peptide datasets to identify strain-specific peptides and infer phylogenetic relationships and sample-specific signals.

Key Features:

• Peptidome Similarity Analysis: Analyzes and compares peptide datasets to identify strain-specific peptides, intra-species differences among biological replicates, and microorganism-phenotype variations to support phylogenetic classification.
• Versatile Dataset Compatibility: Processes peptide datasets from bacteria, viruses, eukaryotic species, and metaproteomes and accepts whole proteome datasets and experimental mass-to-charge lists from mass spectrometry.
• Phylogenetic Signal Identification: Generates a curated list of peptides with phylogenetic signals and sample-specific potential and creates a consensus peak set matrix for downstream phylogenetic analysis.
• Sample-to-Sample Comparison: Uses the consensus peak set matrix to perform sample-to-sample comparisons for phylogenetic insight.
• Handling Large Datasets: Reduces large proteomic datasets into smaller matrices while preserving phylogenetic resolution.

Scientific Applications:

• Phylogenetic Analysis in Challenging Taxonomic Groups: Enhances phylogenetic analyses in taxonomic groups with classification challenges.
• Biomarker Identification: Identifies strain-specific peptides to support biomarker discovery for diagnostics and therapeutics.
• Epidemiologic Studies: Compares microbial proteomes to track disease outbreaks and understand pathogen evolution.

Methodology:

Processes peptide datasets (including whole proteomes and mass-to-charge lists from mass spectrometry), generates curated peptide lists with phylogenetic signals, creates a consensus peak set matrix, and reduces large proteomic datasets into smaller matrices for sample comparison.