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Carotenoid modifying enzymes in metazoans.

Alexander R Moise1, Sepalika Bandara2, Johannes von Lintig2

  • 1Northern Ontario School of Medicine, Sudbury, ON, Canada; Department of Chemistry and Biochemistry, Biology and Biomolecular Sciences Program, Laurentian University, Sudbury, ON, Canada.

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Animals utilize dietary carotenoids for vision, health signaling, and protection from damage. Evolutionary links between animal and plant carotenoid pathways aid in identifying and understanding animal carotenoid-modifying enzymes.

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ApocarotenoidsCarotene cleavage oxygenaseCarotenoid ketolasesCarotenoidsRetinoidsRetinol saturase

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Area of Science:

  • Biochemistry
  • Evolutionary Biology
  • Animal Physiology

Background:

  • Carotenoids are vital dietary pigments for animals, serving roles in vision, antioxidant defense, and health signaling.
  • They are precursors to essential retinoids, such as retinol and retinoic acid, which regulate nuclear hormone receptors and visual processes.
  • The metabolic pathways for carotenoids in animals show similarities to those in plants, suggesting an evolutionary link.

Purpose of the Study:

  • To explore the evolutionary transmission of carotenoid genes from carotenogenic organisms to metazoans.
  • To review methods for identifying and characterizing animal carotenoid-modifying enzymes.
  • To describe techniques for functional validation and biochemical analysis of these enzymes.

Main Methods:

  • Comparative analysis of carotenoid and retinoid metabolic pathways.
  • Bioinformatic approaches to identify putative animal carotenoid-modifying enzymes.
  • Biochemical assays and functional validation studies for enzyme characterization.

Main Results:

  • Evidence suggests gene transfer events contributing to animal carotenoid metabolism.
  • Established methodologies allow for the discovery of novel animal enzymes involved in carotenoid modification.
  • Functional studies confirm the biochemical activities of identified animal carotenoid-modifying enzymes.

Conclusions:

  • The evolutionary relationship between plant and animal carotenoid metabolism is a valuable resource for enzyme discovery.
  • Understanding these pathways is crucial for comprehending animal physiology and health.
  • Further research into animal carotenoid-modifying enzymes can reveal new biochemical functions and therapeutic targets.