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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
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Molecular Chaperones and Protein Folding03:00

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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.
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Updated: Oct 28, 2025

Development of a Backbone Cyclic Peptide Library as Potential Antiparasitic Therapeutics Using Microwave Irradiation
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Cyclisation strategies for stabilising peptides with irregular conformations.

Quynh Ngoc Vu1, Reginald Young1, Haritha Krishna Sudhakar1

  • 1School of Chemistry, Eastern Ave, The University of Sydney NSW 2006 Australia yuheng.lau@sydney.edu.au.

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Summary

Peptide cyclisation can stabilize irregular structures, enhancing therapeutic potential. This review explores methods for designing cyclic peptides with irregular conformations for drug development.

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Area of Science:

  • Medicinal Chemistry
  • Peptide Science
  • Drug Discovery

Background:

  • Peptide cyclisation is a key strategy for improving drug properties.
  • Existing research focuses on stabilizing regular peptide structures (alpha-helices, beta-sheets).
  • Stabilizing irregular peptide conformations remains underexplored.

Purpose of the Study:

  • To review successful cyclisation techniques for irregular peptide conformations.
  • To provide design principles for creating cyclic peptides with irregular structures.
  • To adapt existing methods for stabilizing irregular binding motifs.

Main Methods:

  • Highlighting successful case studies of peptide cyclisation for irregular structures.
  • Discussing design strategies informed by beta-strand stabilization.
  • Incorporating computational design and library screening insights.

Main Results:

  • Demonstrated successful stabilization of irregular peptide conformations via cyclisation.
  • Identified key principles for designing cyclic constraints in irregular peptides.
  • Showcased adaptability of existing cyclisation techniques.

Conclusions:

  • Peptide cyclisation can effectively stabilize irregular conformations.
  • Design strategies for irregular cyclic peptides can be adapted from existing knowledge.
  • This approach offers a pathway to enhance therapeutic potential of irregularly structured peptides.