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Related Concept Videos

Protein Folding01:22

Protein Folding

Overview
Protein Folding01:25

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 Folding01:22

Protein Folding

Overview
Molecular Chaperones and Protein Folding03:00

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 Folding03:00

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...

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Related Experiment Video

Updated: Jun 16, 2026

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
08:34

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy

Published on: February 5, 2020

Single-molecule folding.

Xiaowei Zhuang1, Matthias Rief

  • 1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA. zhuang@chemistry.harvard.edu

Current Opinion in Structural Biology
|February 13, 2003
PubMed
Summary
This summary is machine-generated.

Single-molecule spectroscopy techniques like fluorescence and force spectroscopy reveal complex biomolecular dynamics. These methods overcome ensemble averages to study individual protein and RNA folding pathways.

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Microfluidic Mixers for Studying Protein Folding
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Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy
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Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy

Published on: April 28, 2011

Related Experiment Videos

Last Updated: Jun 16, 2026

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
08:34

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy

Published on: February 5, 2020

Microfluidic Mixers for Studying Protein Folding
12:42

Microfluidic Mixers for Studying Protein Folding

Published on: April 10, 2012

Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy
10:09

Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy

Published on: April 28, 2011

Area of Science:

  • Biophysics
  • Biochemistry
  • Molecular Biology

Background:

  • Traditional methods average biomolecular behavior, masking crucial dynamic details.
  • Understanding complex biological processes requires studying individual molecular actions.

Purpose of the Study:

  • To highlight the power of single-molecule techniques in biophysics.
  • To showcase recent advancements in fluorescence and force spectroscopy for studying biomacromolecules.

Main Methods:

  • Utilizing single-molecule fluorescence spectroscopy.
  • Employing single-molecule force spectroscopy.

Main Results:

  • These techniques allow measurement beyond ensemble averages.
  • Transient intermediate states and multiple reaction pathways are directly resolved.
  • Exciting new insights into protein and RNA folding have been obtained.

Conclusions:

  • Single-molecule approaches are uniquely powerful for characterizing complex biological dynamics.
  • Advancements in spectroscopy offer unprecedented views into biomolecular behavior.