Residue mutations and their impact on protein structure and function: detecting beneficial and pathogenic changes

Area of Science:

• Molecular Biology
• Structural Biology
• Evolutionary Biology

Background:

• Proteins evolve via natural selection, exhibiting periods of stable and rapid change.
• Mutation fixation depends on phenotype fitness and residue position in 3D protein structures.
• Co-evolution of spatially close residues maintains protein stability.

Purpose of the Study:

• To review protein evolution and the structural impact of amino acid mutations on protein function.
• To discuss novel tools for identifying episodic mutations and their medical applications.
• To explore the synthesis of protein biophysics, structure-function, and molecular evolution.

Main Methods:

• Review of existing literature on protein evolution and structural biology.
• Discussion of computational tools for identifying episodic mutations.
• Analysis of simulated and real biological sequence data (viruses, animals).

Main Results:

• Point mutations fine-tune protein function, while insertions/deletions can significantly alter function and interactions.
• New tools can identify episodic mutations with applications in medical research.
• Integrating structural constraints improves sequence evolution models.

Conclusions:

• Understanding structural constraints is crucial for modeling protein sequence evolution.
• Combining protein biophysics, structure-function, and molecular evolution offers deeper insights.
• Episodic mutation analysis has significant potential in medical research, particularly for viruses.