IRMa

IRMa validates and organizes Mascot peptide-spectrum matches (PSMs) to enable reliable protein identification from mass spectrometry-based proteomics data.

Key Features:

• Manual validation of PSMs: Enables manual confirmation or rejection of peptide-spectrum matches to improve identification confidence.
• Automatic filtering: Filters Mascot search results based on predefined or user-defined parameters to remove non-significant hits.
• Dynamic grouping: Groups and regroups protein hits identified by the same peptide(s) to maintain coherence of identifications.
• Batch processing / high-throughput automation: Supports fully automated batch processing for high-throughput pipelines.
• Export formats including MSIdb: Exports validated identifications in multiple formats, including the MSIdb identification database.
• Centralized repository generation: Compiles search results into a unique repository that summarizes project-wide identifications.
• Parsing of Mascot result files: Reads Mascot result files using the Matrix Science Parser.

Scientific Applications:

• Protein identification validation: Confirms Mascot-derived peptide-spectrum matches to increase confidence in protein identifications from mass spectrometry datasets.
• High-throughput proteomics: Integrates into automated pipelines for large-scale or complex experimental designs requiring batch processing.
• Data curation and integration: Produces summarized repositories and exportable identification databases for cross-study data management and downstream analyses.

Methodology:

Reads Mascot result files using the Matrix Science Parser and processes them to filter and validate peptide-spectrum matches (PSMs) according to user-defined criteria or automated settings, while dynamically grouping and organizing hits identified by the same peptide(s).