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Related Concept Videos

Protein Folding01:25

Protein Folding

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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...
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Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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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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Protein Folding Quality Check in the RER01:29

Protein Folding Quality Check in the RER

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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...
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Amyloid Fibrils03:03

Amyloid Fibrils

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Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining,...
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Proteins: From Genes to Degradation02:11

Proteins: From Genes to Degradation

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Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
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Protein Organization01:24

Protein Organization

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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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Updated: Jun 10, 2025

Microfluidic Mixers for Studying Protein Folding
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Microfluidic Mixers for Studying Protein Folding

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Solving the protein folding problem….

Roy D Sleator1

  • 1Department of Biological Sciences, Munster Technological University, Cork, Ireland.

FEBS Letters
|October 20, 2024
PubMed
Summary
This summary is machine-generated.

This study explores the protein folding problem, addressing the amino acid sequence code, the speed of folding (Levinthal's paradox), and computational prediction methods. It traces the scientific journey toward understanding these complex biological challenges.

Keywords:
AlphaFoldESMFoldFolding@HomeFolditRoseTTAFoldfolding funnel hypothesiszipping and assembly

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Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy

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Last Updated: Jun 10, 2025

Microfluidic Mixers for Studying Protein Folding
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Interview: Protein Folding and Studies of Neurodegenerative Diseases
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Thermodynamics of Membrane Protein Folding Measured by Fluorescence Spectroscopy
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Area of Science:

  • Biochemistry and Molecular Biology
  • Computational Biology
  • Structural Biology

Background:

  • The protein folding problem is a complex biological challenge.
  • It encompasses understanding the folding code, the kinetics of folding, and computational prediction.
  • Levinthal's paradox highlights the rapid timescale of protein folding.

Purpose of the Study:

  • To elucidate the historical and scientific progression in solving the protein folding problem.
  • To address the 'riddle' of the folding code at the amino acid level.
  • To investigate the 'mystery' of folding kinetics and Levinthal's paradox.
  • To tackle the 'enigma' of predicting protein structure from sequence computationally.

Main Methods:

  • Historical review of key discoveries and theoretical frameworks.
  • Analysis of experimental data on protein folding pathways.
  • Examination of computational algorithms for protein structure prediction.

Main Results:

  • The study outlines the evolution of understanding regarding the forces driving protein folding.
  • It details advancements in explaining the rapid folding process, resolving Levinthal's paradox.
  • Progress in computational methods for predicting protein structure is highlighted.

Conclusions:

  • Significant strides have been made in deciphering the protein folding problem.
  • A comprehensive understanding integrating sequence, kinetics, and structure prediction is emerging.
  • The interdisciplinary approach has been crucial for advancing the field.