BiblioSpec

BiblioSpec performs peptide identification by matching tandem mass spectra (MS/MS) against curated spectral libraries annotated with peptide sequences.

Key Features:

• Spectral library creation: Creates and assembles custom spectral libraries composed of reference spectra with known peptide sequences.
• Library searching: Searches query MS/MS spectra against spectral libraries via peptide-spectrum matching.
• Support for pre-assembled and custom libraries: Supports both pre-assembled libraries tailored for model organisms and user-generated libraries.
• Use of previously identified spectra: Leverages previously identified and cataloged tandem MS peptide spectra as reference data for matching.

Scientific Applications:

• Peptide identification from MS/MS: Identification of peptides by matching experimental MS/MS spectra to library spectra.
• Proteomics studies: Analysis of protein expression and post-translational modifications using library-based spectrum matching.
• Model organism proteomics: Application of organism-specific spectral libraries for targeted proteome analysis.

Methodology:

Compares query MS/MS spectra to reference spectra within spectral libraries using direct spectrum-to-spectrum matching and employs previously identified, cataloged tandem MS peptide spectra; supports searches against pre-assembled and user-generated libraries.