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Related Experiment Videos

Circadian rhythms: PASsing time

A J Millar1

  • 1Department of Biological Sciences, University of Warwick, Coventry, UK. Andrew.Millar@warwick.ac.uk

Current Biology : CB
|August 1, 1997
PubMed
Summary
This summary is machine-generated.

Scientists are finding connections between the biological clocks of different species. The Neurospora Frequency protein shows a rhythm similar to Drosophila

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Area of Science:

  • Chronobiology
  • Molecular Biology
  • Comparative Genomics

Background:

  • Circadian clocks regulate daily rhythms in organisms.
  • Understanding conserved clock mechanisms is crucial for deciphering biological timing.
  • Previous research identified clock components in various species, but cross-species functional links were less clear.

Purpose of the Study:

  • To investigate conserved elements in circadian clock mechanisms across different species.
  • To compare the properties of the Neurospora Frequency protein with known clock proteins in other organisms.
  • To identify shared molecular domains involved in circadian regulation.

Main Methods:

  • Comparative analysis of protein sequences and structures.
  • Examination of protein abundance and phosphorylation rhythms.

Related Experiment Videos

  • Bioinformatic identification of conserved protein domains, such as PAS domains.

    • Main Results:

    • The Neurospora Frequency protein exhibits a rhythm of abundance and phosphorylation analogous to the Drosophila Period protein.
    • Key circadian clock components, including Period proteins from Neurospora and mouse, share conserved 'PAS' domains.
    • These findings suggest a conserved molecular basis for circadian rhythmicity.

    Conclusions:

    • The study highlights significant parallels between fungal and animal circadian clock systems.
    • Conserved domains like PAS are likely critical for the function of core clock proteins across diverse taxa.
    • These conserved mechanisms provide a foundation for future research into the evolution and regulation of circadian clocks.