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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

Protein and Protein Structure

Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...

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Related Experiment Video

Updated: Mar 14, 2026

Designing a Bio-responsive Robot from DNA Origami

Designing a Bio-responsive Robot from DNA Origami

Published on: July 8, 2013

Designed Protein Origami.

Igor Drobnak¹, Ajasja Ljubetič¹, Helena Gradišar^1,2

¹Laboratory of Biotechnology, National Institute of Chemistry, Ljubljana, Slovenia.

Advances in Experimental Medicine and Biology

|September 29, 2016

Summary

This summary is machine-generated.

Designing novel protein folds offers a new avenue for creating advanced molecular machines. This protein origami approach uses self-assembling polypeptide modules to build complex structures, expanding beyond natural protein limitations.

Keywords:

Building blocks Coiled-coil Modular topological folds Oligomerization domains Protein assemblies Protein design Protein origami

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Designing a Bio-responsive Robot from DNA Origami

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Published on: September 27, 2019

Area of Science:

Biochemistry
Molecular Biology
Protein Engineering

Background:

Proteins are complex molecular machines with structures evolved over millennia.
Designing de novo protein folds is challenging due to the complexity of optimizing interactions.
Existing methods for protein design are limited in creating novel structures.

Purpose of the Study:

To explore a novel approach for designing new protein folds not found in nature.
To develop a modular strategy for constructing complex protein structures.
To enable the creation of diverse molecular machines through protein engineering.

Main Methods:

Designing protein folds as mathematical graphs using self-assembling polypeptide modules.
Utilizing orthogonal coiled-coil dimers as ideal building blocks.
Employing a strategy analogous to DNA nanotechnology for polypeptide chain assembly.

Main Results:

Demonstrated a modular approach to protein fold design using self-assembling units.
Showcased the potential of coiled-coil dimers as versatile building blocks.
Established a framework for creating complex tertiary structures through long-range interactions.

Conclusions:

Protein origami offers a promising alternative for de novo protein fold design.
This modular strategy can lead to the construction of novel molecular machines.
Further development of building blocks and design strategies will expand the capabilities of protein origami technology.