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Proposed systematic nomenclature for orbitides.

Youn Young Shim1,2, Lester W Young1, Paul G Arnison3

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Journal of Natural Products
|March 19, 2015
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Summary

Researchers propose a systematic naming system for plant orbitides (Type VI cyclic peptides). This new nomenclature ensures clarity and consistency, aiding future research in plant natural products.

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Area of Science:

  • Plant biochemistry
  • Natural product chemistry
  • Peptidomics

Background:

  • Orbitides are homodetic cyclic peptides synthesized ribosomally in plants.
  • Current nomenclature for Type VI cyclic peptides is arbitrary and lacks standardization.
  • Discovery of orbitides is achieved through mass spectrometry or DNA sequencing.

Purpose of the Study:

  • To propose a systematic nomenclature for Type VI cyclic peptides.
  • To establish a naming convention reflecting taxonomic origin and amino acid modifications.
  • To ensure consistency with existing natural product and protein databases.

Main Methods:

  • Review of existing nomenclature systems (IUPAC, UniProt).
  • Development of a systematic naming convention for orbitides.
  • Application of the proposed system to Linum usitatissimum orbitides.

Main Results:

  • A novel, systematic nomenclature for Type VI cyclic peptides is presented.
  • The proposed system incorporates taxonomic identifiers and residue numbering.
  • Nomenclature for post-translational modifications aligns with IUPAC standards.

Conclusions:

  • The proposed nomenclature provides a standardized framework for orbitides.
  • This system enhances clarity and facilitates data sharing in plant peptide research.
  • Consistent nomenclature is crucial for advancing the study of plant natural products.