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Circadian Clock in Drosophila

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Description

Circadian rhythms are near-24-hour rhythms of biological processes that persist in the absence of environmental cues such as light and temperature. Such rhythms have been described in organisms ranging from photosynthetic prokaryotes to higher eukaryotes and reflect the existence of an underlying intrinsic circadian oscillator or biological clock. This circadian oscillator may impart an advantage to the organism by temporally orchestrating physiological and behavioral processes to better adapt to the predictable daily changes in the environment. For example, in Cyanobacteria and Arabidopsis, the circadian oscillator directs transcription of the photosynthetic machinery to the daylight hours, thereby ensuring efficient assimilation of light energy. In mammals, circadian consolidation of locomotor activity to time of food availability and predator avoidance functions to improve [...]

References:

1.At the pulse of time: protein interactions determine the pace of circadian clocks
Schoning JC, Staiger D.
FEBS Lett. 2005 Jun 13;579(15):3246-52. Epub 2005 Mar 24
2.The circadian timekeeping system of Drosophila
Hardin PE
Curr Biol. 2005 Sep 6; 15(17):R714-22.
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