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Class III plant peroxidases: From classification to physiological functions.

Cleverson D T Freitas1, José H Costa1, Thais A Germano1

  • 1Department of Biochemistry and Molecular Biology, Federal University of Ceará, Campus do Pici, Fortaleza, Ceará CEP 60451-970, Brazil.

International Journal of Biological Macromolecules
|February 22, 2024
PubMed
Summary

Class III plant peroxidases are crucial haem-enzymes involved in many plant processes. This review updates knowledge on their database, classification, phylogeny, mechanism, structure, and functions.

Keywords:
AuxinCell wallHydrogen peroxideROSRedOxiBase

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Area of Science:

  • Biochemistry
  • Plant Science
  • Enzymology

Background:

  • Peroxidases are vital enzymes found across biological systems, classified as haem or non-haem.
  • Haem peroxidases constitute approximately 84% of known peroxidase enzymes, with Class III plant peroxidases being a significant subgroup.
  • Class III plant peroxidases are haem-enzymes characterized by conserved structures and mechanisms for degrading hydrogen peroxide.

Purpose of the Study:

  • To provide an updated review of Class III plant peroxidases.
  • To consolidate information on their database, classification, and phylogeny.
  • To detail their mechanism of action, structure, and diverse physiological functions in plants.

Main Methods:

  • Literature review and database compilation.
  • Phylogenetic analysis of Class III plant peroxidases.
  • Analysis of structural and mechanistic data.
  • Synthesis of information on physiological roles.

Main Results:

  • Class III plant peroxidases are multigene families involved in reactive oxygen species metabolism, hormone regulation, and cell wall dynamics.
  • These enzymes play critical roles in fruit development, plant defense mechanisms, and cell wall synthesis and maintenance.
  • The review consolidates current understanding of their evolutionary relationships, catalytic mechanisms, and structural features.

Conclusions:

  • Class III plant peroxidases are extensively studied due to their broad physiological importance.
  • This review serves as a comprehensive resource for researchers in plant biochemistry and molecular biology.
  • Further research into these enzymes can unlock new applications in agriculture and biotechnology.