First Author | Akashi M | Year | 2006 |
Journal | Mol Biol Cell | Volume | 17 |
Issue | 2 | Pages | 555-65 |
PubMed ID | 16280364 | Mgi Jnum | J:111730 |
Mgi Id | MGI:3654781 | Doi | 10.1091/mbc.E05-05-0396 |
Citation | Akashi M, et al. (2006) Molecular mechanism of cell-autonomous circadian gene expression of Period2, a crucial regulator of the mammalian circadian clock. Mol Biol Cell 17(2):555-65 |
abstractText | Although circadian transcription of Period2 (Per2) is fundamental for the generation of circadian rhythm, the molecular mechanism remains unclear. Here we report that cell-autonomous circadian transcription of Per2 is driven by two transcriptional elements, one for rhythm generation and the other for phase control. The former contains the E-box-like sequence (CACGTT) that is sufficient and indispensable to drive oscillation, and indeed circadian transcription factors site-specifically bind to it. Furthermore, the nature of this atypical E-box is different from that of the classical circadian E-box. The current feedback loop model is based mainly on Period1. Our results provide not only compelling evidence in support of this model but also an explanation for a general basic mechanism to produce various patterns in the phase and amplitude of cell-autonomous circadian gene expression. |