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Protein Folding

Protein Folding

Protein Folding

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...

Protein Folding

Protein Folding

Molecular Chaperones and Protein Folding

Molecular Chaperones and Protein Folding

The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...

Molecular Chaperones and Protein Folding

Molecular Chaperones and Protein Folding

The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...

Amyloid Fibrils

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...

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Related Experiment Video

Updated: May 18, 2026

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

Published on: March 1, 2022

Coarse-grained models for protein folding and aggregation.

Philippe Derreumaux¹

¹Laboratory of Theoretical Biochemistry, Paris 7 University, Paris, France. philippe.derreumaux@ibpc.fr

Methods in Molecular Biology (Clifton, N.J.)

|October 5, 2012

Summary

This summary is machine-generated.

Coarse-grained models simulate protein folding and aggregation dynamics, overcoming limitations of all-atom simulations for large-scale studies. These models aid in understanding protein assembly and neurodegenerative diseases.

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Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

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Characterizing Individual Protein Aggregates by Infrared Nanospectroscopy and Atomic Force Microscopy

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Area of Science:

Computational biology
Biophysics
Molecular dynamics

Background:

All-atom models are computationally expensive for large-scale protein dynamics.
Understanding protein folding and aggregation is crucial for disease research.

Purpose of the Study:

To explore protein folding and aggregation using coarse-grained models.
To investigate timescales and dimensions inaccessible to all-atom simulations.

Main Methods:

Development and application of coarse-grained models with varying granularity.
Integration with enhanced configuration search methods.
Computer simulations of protein folding and assembly.

Main Results:

Coarse-grained models enable exploration of large-scale protein dynamics.
These models facilitate determination of equilibrium structures and folding kinetics.
Insights into the assembly of amyloid proteins and neurodegenerative diseases.

Conclusions:

Coarse-grained models are powerful tools for studying protein folding and misfolding.
These models offer potential for understanding disease mechanisms.
Discussion of the capabilities and constraints of coarse-grained simulations.