iProt-Sub: a comprehensive package for accurately mapping and predicting protease-specific substrates and cleavage...

Area of Science:

• Biochemistry
• Bioinformatics
• Computational Biology

Background:

• Proteolysis regulation is crucial for cellular processes.
• Identifying protease-specific substrates is key to understanding these mechanisms.

Purpose of the Study:

• To develop iProt-Sub, an advanced bioinformatics tool for predicting protease-specific substrates and cleavage sites.
• To improve upon the performance and coverage of existing prediction tools.

Main Methods:

• iProt-Sub integrates heterogeneous sequence and structural features.
• A two-step feature selection procedure removes redundant features.
• Uses 11 sequence encoding schemes, including local amino acid profile, secondary structure, solvent accessibility, and native disorder.

Main Results:

• iProt-Sub demonstrates superior prediction performance compared to existing generic tools.
• Achieves better prediction accuracy and coverage for 38 proteases across 4 major protease families.
• Benchmarking via cross-validation and independent tests confirms improved performance.

Conclusions:

• iProt-Sub is a powerful tool for proteome-wide prediction of protease substrates and cleavage sites.
• Facilitates functional studies of protease-specific substrate cleavage and proteolytic events.