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A circadian sleep disorder reveals a complex clock
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A circadian sleep disorder reveals a complex clock CELL Mignot, E., Takahashi, J. S. 2007; 128 (1): 22-23Abstract
Circadian rhythms are established by transcription of clock genes and autoregulatory transcriptional feedback loops. In this issue, Xu et al. (2007) characterize mice expressing a human Per2 mutation identified in patients with familial advanced sleep phase syndrome. Their results reveal that PER2 phosphorylation, by CK1delta and other kinases, is surprisingly complex and has opposite effects on PER2 levels and period length.
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