Inter-residue interactions in protein folding and stability.

Area of Science:

• * Structural biology
• * Biophysics
• * Computational biology

Background:

• * Protein folding is a complex process driven by cooperative interactions between amino acid residues.
• * Understanding these inter-residue interactions is crucial for deciphering protein folding mechanisms and stability.
• * Previous studies have explored various aspects of these interactions, but a comprehensive review is needed.

Purpose of the Study:

• * To classify inter-residue interactions based on their range (short, medium, long).
• * To delineate the characteristics of these interactions across different protein types and structures.
• * To evaluate the utility of inter-residue contacts in various protein structure prediction tasks and their relation to folding rates.

Main Methods:

• * Geometric approach for classifying inter-residue interactions by distance.
• * Review and synthesis of existing literature on inter-residue interactions and their applications.
• * Evaluation of contact potentials and their role in structure prediction and fold recognition.

Main Results:

• * Classification of inter-residue interactions into short, medium, and long-range categories.
• * Detailed features of interactions in globular and membrane proteins, and diverse folds.
• * Demonstrated applications of inter-residue contacts in predicting structural class, secondary structure, solvent accessibility, and tertiary structure.
• * Highlighted correlation between inter-residue contacts and protein folding rates.

Conclusions:

• * Inter-residue interactions are fundamental to protein structure, folding, and stability.
• * Classification and analysis of these interactions provide valuable insights for protein structure prediction.
• * Understanding inter-residue interactions aids in de novo protein design and comprehending folding kinetics.