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| Citation | Yu, W., Zheng, H., Houl, J.H., Dauwalder, B., Hardin, P.E. (2006). PER-dependent rhythms in CLK phosphorylation and E-box binding regulate circadian transcription. Genes Dev. 20(6): 723--733. (Export to RIS) | ||
| FlyBase ID | FBrf0190570 | ||
| Publication Type | Research paper | ||
| PubMed ID | 16543224 | ||
| PubMed Abstract | Transcriptional activation by CLOCK-CYCLE (CLK-CYC) heterodimers and repression by PERIOD-TIMELESS (PER-TIM) heterodimers are essential for circadian oscillator function in Drosophila. PER-TIM was previously found to interact with CLK-CYC to repress transcription, and here we show that this interaction inhibits binding of CLK-CYC to E-box regulatory elements in vivo. Coincident with the interaction between PER-TIM and CLK-CYC is the hyperphosphorylation of CLK. This hyperphosphorylation occurs in parallel with the PER-dependent entry of DOUBLE-TIME (DBT) kinase into a complex with CLK-CYC, where DBT destabilizes both CLK and PER. Once PER and CLK are degraded, a novel hypophosphorylated form of CLK accumulates in parallel with E-box binding and transcriptional activation. These studies suggest that PER-dependent rhythms in CLK phosphorylation control rhythms in E-box-dependent transcription and CLK stability, thus linking PER and CLK function during the circadian cycle and distinguishing the transcriptional feedback mechanism in flies from that in mammals. | ||
| DOI | 10.1101/gad.1404406 | ||
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| Language of Publication | English | ||
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Parent Publication
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| Publication Type | Journal | ||
| Abbreviation | Genes Dev. | ||
| Title | Genes & Development | ||
| Publication Year | 1987- | ||
| ISBN/ISSN | 0890-9369 | ||
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Data from Reference
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| Alleles (9)
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| Genes (6)
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