Molecular Mechanisms Regulating Temperature Compensation of the Circadian Clock.
An approximately 24-h biological timekeeping mechanism called the circadian clock is present in virtually all light-sensitive organisms from cyanobacteria to humans. The clock system regulates our sleep-wake cycle, feeding-fasting, hormonal secretion, body temperature, and many other physiological functions. Signals from the master circadian oscillator entrain peripheral clocks using a variety of neural and hormonal signals. Even centrally controlled internal temperature fluctuations can entrain the peripheral circadian clocks. But, unlike other chemical reactions, the output of the clock system remains nearly constant with fluctuations in ambient temperature, a phenomenon known as temperature compensation. In this brief review, we focus on recent advances in our understanding of the posttranslational modifications, especially a phosphoswitch mechanism controlling the stability of PER2 and its implications for the regulation of temperature compensation.
Duke Scholars
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- 5202 Biological psychology
- 3209 Neurosciences
- 3202 Clinical sciences
- 1701 Psychology
- 1109 Neurosciences
- 1103 Clinical Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Start / End Page
Location
Related Subject Headings
- 5202 Biological psychology
- 3209 Neurosciences
- 3202 Clinical sciences
- 1701 Psychology
- 1109 Neurosciences
- 1103 Clinical Sciences