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Related Concept Videos

Protein Folding01:22

Protein Folding

Overview
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...
Protein Folding Quality Check in the RER01:29

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...
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...
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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Updated: Jul 6, 2026

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

Solving the membrane protein folding problem.

James U Bowie1

  • 1Department of Chemistry and Biochemistry, UCLA-DOE Center for Genomics and Proteomics, Molecular Biology Institute, Boyer Hall, UCLA, 611 Charles E. Young Drive E, Los Angeles, California 90095-1570, USA. bowie@mbi.ucla.edu

Nature
|December 2, 2005
PubMed
Summary
This summary is machine-generated.

Understanding protein folding is a major challenge. Recent advances in determining membrane protein structures offer optimism for solving the protein folding problem.

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Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Determining protein sequence-structure relationships is a fundamental challenge in molecular biology.
  • Historically, membrane protein structures were poorly understood, hindering research.
  • Significant progress has been made, with over 90 unique membrane protein structures now known.

Purpose of the Study:

  • To highlight the progress in understanding membrane protein structures.
  • To discuss the implications of new structural data for solving the protein folding problem.
  • To convey optimism regarding future solutions to membrane protein folding.

Main Methods:

  • Review of existing literature on membrane protein structures.
  • Analysis of advancements in structural determination techniques.
  • Integration of structural data with theoretical models of protein folding.

Main Results:

  • Over 90 unique membrane protein structures have been elucidated.
  • An enhanced understanding of the 'structure universe' for membrane proteins has been achieved.
  • Quantitative insights into protein fold determination are emerging.

Conclusions:

  • The growing body of known membrane protein structures is crucial.
  • Advancements in understanding protein folding are accelerating.
  • A solution to the membrane protein folding problem is increasingly attainable.