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Related Experiment Videos

REV-ving up the clock.

J D Alvarez1, Amita Sehgal

  • 1Department of Pathology and Laboratory Medicine, Philadelphia, PA 19104, USA.

Developmental Cell
|August 27, 2002
PubMed
Summary
This summary is machine-generated.

Circadian rhythms rely on a molecular feedback loop. The nuclear orphan receptor REV-ERBalpha acts as a crucial link connecting the positive and negative elements of this biological clock.

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Area of Science:

  • Molecular Biology
  • Chronobiology
  • Genetics

Background:

  • Circadian rhythms govern daily biological cycles.
  • These rhythms are driven by complex transcription/translation feedback loops.
  • Understanding the molecular components is key to deciphering circadian regulation.

Purpose of the Study:

  • To identify molecular components linking the positive and negative limbs of the circadian feedback loop.
  • To elucidate the role of nuclear orphan receptors in circadian rhythm generation.

Main Methods:

  • Analysis of gene expression patterns.
  • Molecular interaction studies.
  • Functional assays in cellular models.

Main Results:

Related Experiment Videos

  • The nuclear orphan receptor REV-ERBalpha was identified.
  • REV-ERBalpha functions as a molecular bridge between the two feedback loop limbs.
  • This finding clarifies a critical regulatory point in circadian timing.

Conclusions:

  • REV-ERBalpha is a key molecular link in the circadian transcription/translation feedback loop.
  • Its role is essential for coordinating the positive and negative regulatory elements.
  • This discovery deepens our understanding of the molecular mechanisms underlying circadian rhythms.