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Related Experiment Video

Updated: May 13, 2026

Studying Protein Function and the Role of Altered Protein Expression by Antibody Interference and Three-dimensional Reconstructions

Studying Protein Function and the Role of Altered Protein Expression by Antibody Interference and Three-dimensional Reconstructions

Published on: April 21, 2016

A new interpretative paradigm for Conformational Protein Diseases.

Luigi Francesco Agnati¹, Diego Guidolin, Amina S Woods

¹IRCCS San Camillo, Lido Venezia, Italy. luigiagnati@tin.it

Current Protein & Peptide Science

|February 28, 2013

Summary

Conformational Protein Diseases (CPDs) involve protein misfolding and aggregation, leading to diverse disorders. This study explores their dual physiological and pathological roles, proposing evolutionary concepts like mis-exaptation.

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Mapping Dysfunctional Protein-Protein Interactions in Disease

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Published on: October 24, 2025

Area of Science:

Biochemistry
Molecular Biology
Neuroscience

Background:

Conformational Protein Diseases (CPDs) encompass over 40 disorders characterized by misfolded protein accumulation.
These proteins exhibit altered 3D structures, often rich in β-sheets, leading to aggregation and resistance to degradation.
Examples include Alzheimer's, Parkinson's, and prion diseases.

Purpose of the Study:

To explore the dual nature of potentially pathogenic proteins, which also possess uncharacterized physiological functions.
To investigate the evolutionary persistence of these proteins from yeast to humans.
To introduce novel concepts, mis-exaptation and mis-tinkering, to explain the pathological transformation of physiological protein actions.

Main Methods:

Conceptual analysis and theoretical framework development.
Literature review of existing research on CPDs and protein aggregation.
Application of evolutionary biology principles to protein misfolding.

Main Results:

Misfolded proteins can propagate their conformation to native proteins via a seeded crystallization-like process.
Potentially dangerous proteins have been conserved throughout evolution, suggesting underlying physiological roles.
The concepts of mis-exaptation and mis-tinkering offer a new paradigm for understanding CPDs.

Conclusions:

CPDs arise from proteins with inherent dual physiological and pathological potential.
Evolutionary concepts like mis-exaptation may explain why potentially harmful proteins persist.
A new interpretative framework for CPDs is proposed within the context of the Red Queen Theory of Aging.