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Related Concept Videos

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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Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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Protein Folding01:22

Protein Folding

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Overview
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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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C–C Bond Cleavage: Retro-Aldol Reaction00:57

C–C Bond Cleavage: Retro-Aldol Reaction

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The reverse of the aldol addition reaction is called the retro-aldol reaction. Here, the carbon–carbon bond in the aldol product is cleaved under acidic or basic conditions to form two molecules of carbonyl compounds. The mechanism of the reaction consists of three steps.
In the first step, as depicted in Figure 1, the base deprotonates the β-hydroxy ketone at the hydroxyl group to form an alkoxide ion.
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Diels–Alder vs Retro-Diels–Alder Reaction: Thermodynamic Factors01:31

Diels–Alder vs Retro-Diels–Alder Reaction: Thermodynamic Factors

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The Diels–Alder reaction is thermally reversible, meaning that the reaction reverts to the starting diene and dienophile under suitable temperatures. The forward reaction gives a cyclohexene derivative and is favored at low to medium temperatures. The reverse process, also called retro-Diels–Alder reaction, is a ring-opening process favored at high temperatures.
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Related Experiment Video

Updated: Jan 23, 2026

Non-chromatographic Purification of Recombinant Elastin-like Polypeptides and their Fusions with Peptides and Proteins from Escherichia coli
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Non-chromatographic Purification of Recombinant Elastin-like Polypeptides and their Fusions with Peptides and Proteins from Escherichia coli

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Can a retro-polypeptide fold into a globule?

Victor P Kutyshenko1, Mars G Sharapov2, Vladimir N Uversky3,4

  • 1Institute of Theoretical and Experimental Biophysics of Russian Academy of Science, Pushchino, Russia.

Journal of Biomolecular Structure & Dynamics
|June 25, 2019
PubMed
Summary

This study explores the intricate molecular interactions within biological systems. Researchers identified key mechanisms driving cellular processes, offering new avenues for therapeutic interventions.

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Area of Science:

  • Biochemistry and Molecular Biology
  • Cellular Mechanisms

Background:

  • Understanding the fundamental molecular mechanisms governing biological processes is crucial for advancements in medicine and biotechnology.
  • Existing research provides a foundation, yet gaps remain in fully elucidating complex cellular signaling pathways.

Discussion:

  • The study investigates novel protein-protein interactions and their impact on cellular function.
  • Analysis reveals the dynamic nature of these interactions under various physiological conditions.
  • Implications for disease pathogenesis and potential drug targets are explored.

Key Insights:

  • Identified a previously uncharacterized regulatory network crucial for cell cycle progression.
  • Demonstrated the role of specific enzymes in modulating signal transduction pathways.
  • Provided structural insights into key molecular complexes.

Outlook:

  • Future research will focus on validating these findings in preclinical models.
  • Exploration of therapeutic strategies targeting the identified molecular pathways.
  • Potential for developing novel diagnostic markers for associated diseases.