PCPS

PCPS predicts proteolytic cleavage sites generated by the constitutive proteasome and immunoproteasome to identify C-terminal peptide fragments for MHC I presentation and potential CD8 T-cell epitopes.

Key Features:

• Proteasome-type-specific cleavage prediction: Predicts proteolytic cleavage sites produced by both the constitutive proteasome and the immunoproteasome.
• C-terminal peptide output for MHC I: Reports C-terminus fragments that serve as peptide ligands for MHC I molecules.
• CD8 T-cell epitope relevance: Identifies peptides relevant for CD8 T-cell priming and presentation by focusing on proteasomal generation of MHC I ligands.
• Comparative analysis with NetChop: Provides side-by-side comparison of PCPS predictions with NetChop results.

Scientific Applications:

• Epitope prediction and vaccine antigen selection: Use predicted proteasomal cleavage patterns to identify candidate peptides presented by MHC I for CD8 T-cell responses.
• Antigen processing research: Study differences in cleavage specificity between the constitutive proteasome and the immunoproteasome during antigen generation.
• Disease and pathogenesis studies: Investigate proteasome-mediated peptide generation in contexts relevant to immune response and disease mechanisms.
• Therapeutic development: Inform strategies targeting the proteasome pathway for immunomodulatory or proteasome-directed interventions.

Methodology:

Predicts cleavage sites for constitutive and immunoproteasomes and performs comparative analysis with NetChop.