E-box-like Elements and Circadian Rhythm of Clock Genes
Author Information
Author(s): Nakahata Yasukazu, Yoshida Mayumi, Takano Atsuko, Soma Haruhiko, Yamamoto Takuro, Yasuda Akio, Nakatsu Toru, Takumi Toru
Primary Institution: Osaka Bioscience Institute
Hypothesis
A direct repeat of E-box-like elements is required for cell-autonomous circadian rhythm of clock genes.
Conclusion
The study identifies a direct repeat of E-box-like elements as the minimal required element for generating cell-autonomous transcriptional oscillation of clock and clock-controlled genes.
Supporting Evidence
- The study demonstrated that both E-box and E-box-like sequences are necessary for generating cell-autonomous oscillation.
- Analysis showed that the spacing of 6 base pairs between the two E-elements is crucial for robust oscillation.
- In silico analysis revealed that several clock and clock-controlled genes possess a direct repeat of the E-box-like elements in their promoter region.
Takeaway
This study found that two special DNA sequences, called E-box-like elements, work together to help our body's internal clock keep time.
Methodology
The study used an in vitro rhythm oscillation monitoring system (IV-ROMS) to analyze the transcriptional activity of clock genes with E-box-like elements.
Digital Object Identifier (DOI)
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