Disease mutations in disordered regions--exception to the rule?

Area of Science:

• Biochemistry
• Genetics
• Molecular Biology

Background:

• Intrinsically disordered proteins (IDPs) are linked to various human diseases like cancer and neurodegeneration.
• Understanding the link between IDP structure, function, and disease progression is incomplete.
• Altered IDP abundance and their roles in signaling/regulation are implicated in disease.

Purpose of the Study:

• To investigate the role of disease-associated missense mutations in intrinsically disordered regions (IDRs).
• To assess the prevalence and functional impact of mutations within IDPs.
• To explore the significance of disorder-to-order transitions induced by mutations.

Main Methods:

• Analysis of disease-associated missense mutations within intrinsically disordered regions.
• Comparison of mutation frequencies and functional impacts between disease mutations and neutral polymorphisms.
• Evaluation of amino acid substitutions causing disorder-to-order transitions.

Main Results:

• Disease-associated missense mutations in IDRs are more prevalent and impactful than previously assumed.
• Deleterious mutations inducing disorder-to-order transitions are significantly enriched in disease contexts.
• Functional outcomes of mutations in disordered regions may differ from those in ordered regions.

Conclusions:

• Missense mutations in IDRs represent a significant, underappreciated link to human diseases.
• Mutations triggering disorder-to-order transitions are key drivers in IDP-related pathologies.
• Re-evaluating the structure-centric view of missense mutations is necessary, considering IDPs.