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Protein Folding

Protein Folding

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 Organization

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.

Protein Organization

Protein Organization

Protein Organization

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.

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Related Experiment Video

Updated: May 9, 2026

A Protocol for Computer-Based Protein Structure and Function Prediction

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

Simplified protein models: predicting folding pathways and structure using amino acid sequences.

Aashish N Adhikari¹, Karl F Freed, Tobin R Sosnick

¹Department of Chemistry, University of Chicago, Chicago, Illinois 60637, USA.

Physical Review Letters

|July 30, 2013

Summary

This study presents a faster computational model for predicting protein folding pathways and structures. The model reveals that environmental context, not just unfolded state propensities, influences folding order.

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Last Updated: May 9, 2026

A Protocol for Computer-Based Protein Structure and Function Prediction

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Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Published on: July 25, 2013

Area of Science:

Computational Biology
Biophysics
Protein Folding Dynamics

Background:

Predicting protein structure and folding pathways is crucial for understanding biological function.
Current methods like molecular dynamics (MD) simulations are computationally intensive.
The role of intrinsic propensities versus environmental context in protein folding remains debated.

Purpose of the Study:

To develop a computationally efficient model for simultaneously determining protein folding pathways and structures.
To investigate the influence of local structural propensities and environmental context on folding order.

Main Methods:

A novel computational model utilizing a natural coordinate system for protein description.
A search strategy inspired by sequential stabilization of nativelike substructures ('foldons').
Validation against twelve proteins studied previously using atomistic molecular dynamics simulations.

Main Results:

The model accurately predicts folding pathways and structures comparable to MD simulations.
Calculations are several orders of magnitude faster than traditional MD methods.
Nativelike propensities in the unfolded state do not solely dictate the order of structure formation.

Conclusions:

The developed model offers an expedient mechanism for in silico and in vivo protein folding prediction.
Protein folding is influenced by both intrinsic local propensities and environmental context.
The findings challenge the notion that unfolded state propensities exclusively determine folding sequence.