H-Protection

H-Protection predicts which residues in a protein are protected from or susceptible to hydrogen-deuterium exchange using only the protein amino acid sequence.

Key Features:

• Residue Status Prediction: Predicts whether specific residues are protected from or susceptible to hydrogen-deuterium exchange.
• Sequence-Based Analysis: Uses only the amino acid sequence and does not require structural data.
• FoldUnfold-based Unstructured Region Prediction: Applies the FoldUnfold approach to identify unstructured regions that inform protection status.
• High Accuracy: Demonstrated approximately 80% accuracy in predicting residue protection status across seven proteins.

Scientific Applications:

• Protein Flexibility and Dynamics: Identifying protected regions provides insight into local flexibility and dynamic behavior of proteins.
• Functional Property Analysis: Helps assess how flexible segments contribute to folding intermediates or native-state functional properties.
• Solution Behavior Prediction: Evaluates whether bioinformatics-derived properties can predict protein behavior in solution.

Methodology:

The method uses the FoldUnfold approach to predict unstructured regions and infers regions with high probability of being folded in equilibrium intermediates or native states to predict protection from hydrogen-deuterium exchange; predictive capability was validated across multiple protein datasets, including seven proteins (≈80% accuracy).