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Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter
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Phosphorylation and Circadian Molecular Timing.

Andrea Brenna1,2, Urs Albrecht2

  • 1Department of Medicine, University of Fribourg, Fribourg, Switzerland.

Frontiers in Physiology
|December 16, 2020
PubMed
Summary

Circadian rhythms, regulated by an internal body clock, adapt to environmental changes. Phosphorylation of clock proteins is crucial for precise timing in mammals, with ancient origins in cyanobacteria.

Keywords:
circadianclockkinasemetabolismphosphorylation

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Area of Science:

  • * Chronobiology and molecular mechanisms of biological rhythms.
  • * Mammalian physiology and cellular processes.

Background:

  • * Endogenous circadian rhythms are internally generated biological processes governing physiological functions.
  • * These rhythms synchronize daily physiological responses to environmental cues.
  • * Post-translational modifications (PTMs) ensure the precision of the circadian system.

Approach:

  • * Review of scientific literature on circadian rhythms and phosphorylation.
  • * Detailed analysis of phosphorylation's role in the mammalian circadian clock.
  • * Overview of key discoveries in the field.

Key Points:

  • * Phosphorylation is a critical post-translational modification influencing circadian clock protein function.
  • * This mechanism, observed across kingdoms, is vital for adapting biological rhythms to environmental changes.
  • * Ancient examples of phosphorylation-driven circadian rhythms exist in cyanobacteria.

Conclusions:

  • * Phosphorylation plays a significant role in modulating the mammalian circadian clock.
  • * Understanding these mechanisms is key to comprehending circadian regulation and its disruptions.