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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 Quality Check in the RER

Protein Folding Quality Check in the RER

ER is the primary site for the maturation and folding of soluble and transmembrane secretory proteins. The calnexin cycle is a specific chaperone system that folds and assesses the confirmation of N-glycosylated proteins before they can exit the ER lumen. The primary players of this quality check pipeline are the lectins, ER-resident chaperones, and a glucosyl transferase enzyme. In case the calnexin system in the lumen fails to salvage a misfolded protein, it is transported to the cytoplasm...

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

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: Nov 27, 2025

Assessment of Immunologically Relevant Dynamic Tertiary Structural Features of the HIV-1 V3 Loop Crown R2 Sequence by ab initio Folding

Assessment of Immunologically Relevant Dynamic Tertiary Structural Features of the HIV-1 V3 Loop Crown R2 Sequence by ab initio Folding

Published on: September 15, 2010

PolyFold: An interactive visual simulator for distance-based protein folding.

Andrew J McGehee¹, Sutanu Bhattacharya¹, Rahmatullah Roche¹

¹Department of Computer Science and Software Engineering, Auburn University, Auburn, AL, United States of America.

|December 3, 2020

Summary

This summary is machine-generated.

PolyFold is a new interactive simulator that visualizes protein folding based on distance matrices. This tool makes complex protein structure prediction accessible for citizen science, enhancing understanding of molecular dynamics.

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Last Updated: Nov 27, 2025

Assessment of Immunologically Relevant Dynamic Tertiary Structural Features of the HIV-1 V3 Loop Crown R2 Sequence by ab initio Folding

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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

Published on: July 14, 2015

Area of Science:

Computational Biology
Structural Biology
Bioinformatics

Background:

Recent advances in distance-based methods have significantly improved protein structure prediction accuracy.
Existing molecular visualizers lack dynamic, distance-based simulation capabilities for protein folding.
A gap exists in tools that visualize the dynamic process of protein folding from distance information.

Purpose of the Study:

To introduce PolyFold, an interactive visual simulator for the distance-based protein folding process.
To provide a system that dynamically captures and renders protein folding in real-time.
To enable intuitive visualization of spatial conformations derived from distance matrices.

Main Methods:

PolyFold integrates stochastic optimization algorithms with interactive manipulation.
It renders distance matrices and compatible spatial conformations dynamically.
The system is designed for intuitive, real-time simulation on personal computers.

Main Results:

PolyFold successfully simulates the dynamic, distance-based protein folding process.
The simulator provides real-time rendering of folding dynamics and spatial conformations.
It offers an accessible platform for visualizing complex protein folding.

Conclusions:

PolyFold addresses the lack of dynamic, distance-based visualization tools in protein structure prediction.
The simulator enhances accessibility to protein folding simulation for research and citizen science.
PolyFold facilitates a deeper understanding of protein structure determination through interactive visualization.