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Caleosin/peroxygenases: multifunctional proteins in plants.

Abdulsamie Hanano1, Elizabeth Blée2, Denis J Murphy3,1

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Annals of Botany
|January 19, 2023
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Summary

Caleosin/peroxygenases (CLO/PXGs) are versatile plant proteins with enzymatic activity, crucial for oxylipin metabolism and stress responses. Ongoing research explores their roles in detoxification and biotechnological applications.

Keywords:
Caleosinlipid dropletsoxylipinsperoxygenaseplant lipidsstress responses

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Area of Science:

  • Plant biochemistry and molecular biology
  • Protein structure and function
  • Lipid metabolism

Background:

  • Caleosin/peroxygenases (CLO/PXGs) are multifunctional proteins found in plants, fungi, and algae.
  • Initially identified as lipid-associated proteins similar to oleosins, CLO/PXGs exhibit more complex structures and functions.
  • These proteins possess conserved domains, diverse localizations, and varied roles in cellular processes.

Approach:

  • This review synthesizes current knowledge on CLO/PXG structural properties and biochemical activities.
  • It examines their peroxygenase functions and involvement in plant oxylipin metabolism.
  • The review links CLO/PXG enzymatic activities and expression patterns to their physiological roles.

Key Points:

  • CLO/PXGs possess conserved structures and exhibit peroxygenase activities.
  • They play significant roles in plant physiology, including biotic and abiotic stress responses.
  • Their involvement in the sequestration and detoxification of xenobiotics is a key area of study.

Conclusions:

  • CLO/PXGs, recognized as lipid-associated proteins and peroxygenases, have diverse functions.
  • Further research is needed to fully understand their roles in plant welfare, particularly in xenobiotic sequestration and detoxification.
  • Biotechnological applications of CLO/PXGs present intriguing future possibilities.