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Conformationally restricted peptides through short-range cyclizations.

C Toniolo1

  • 1C.N.R., Department of Organic Chemistry, University of Padova, Italy.

International Journal of Peptide and Protein Research
|April 1, 1990
PubMed
Summary
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Conformationally restricted peptides are created using short-range cyclizations. These cyclic peptides exhibit distinct conformational properties due to the incorporated ring structures, impacting their overall structure and function.

Area of Science:

  • Peptide Chemistry
  • Organic Chemistry
  • Structural Biology

Background:

  • Peptides play crucial roles in biological systems.
  • Understanding peptide conformation is key to their function.
  • Conformational restriction can enhance peptide stability and activity.

Purpose of the Study:

  • To present various types of conformationally restricted peptides.
  • To highlight peptides formed by short-range cyclizations (i to i+1).
  • To discuss the conformational consequences of incorporating ring structures.

Main Methods:

  • Review of literature on short-range cyclizations.
  • Categorization of cyclization types (N-Cα, C'-Cα, N-C', Cα-Cα, C'-C', N-N).
  • Analysis of conformational impacts of cyclic structures.

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Main Results:

  • Examples of diverse short-range cyclizations are presented.
  • Specific equilibrium types (N⇌Cα, C'⇌Cα, N⇌C', Cα⇌Cα, C'⇌C', N⇌N) are detailed.
  • The study lists pertinent literature for each cyclization type.

Conclusions:

  • Short-range cyclizations yield conformationally restricted peptides.
  • Incorporation of cyclic structures significantly influences peptide conformation.
  • This structural modulation is crucial for peptide design and application.