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- W3045788049 endingPage "30" @default.
- W3045788049 startingPage "11" @default.
- W3045788049 abstract "Abstract Circadian clocks are internal timing systems that enable organisms to adjust their behavioral and physiological rhythms to the daily changes of their environment. These clocks generate self‐sustained oscillations at the cellular, tissue, and behavioral level. The rhythm‐generating mechanism is based on a gene expression network with a delayed negative feedback loop that causes the transcripts to oscillate with a period of approximately 24 hr. This oscillatory nature of the proteins involved in this network necessitates that they are intrinsically unstable, with a short half‐life. Hence, post‐translational modifications (PTMs) are important to precisely time the presence, absence, and interactions of these proteins at appropriate times of the day. Ubiquitination and deubiquitination are counter‐balancing PTMs which play a key role in this regulatory process. In this review, we take a comprehensive look at the roles played by the processes of ubiquitination and deubiquitination in the clock machinery of the most commonly studied eukaryotic models of the circadian clock: plants, fungi, fruit flies, and mammals. We present the effects exerted by ubiquitinating and deubiquitinating enzymes on the stability, but also the activity, localization, and interactions of clock proteins. Overall, these PTMs have key roles in regulating not only the pace of the circadian clocks but also their response to external cues and their control of cellular functions. image" @default.
- W3045788049 created "2020-08-03" @default.
- W3045788049 creator A5000060525 @default.
- W3045788049 creator A5051997052 @default.
- W3045788049 date "2020-09-21" @default.
- W3045788049 modified "2023-10-14" @default.
- W3045788049 title "To Ub or not to Ub: Regulation of circadian clocks by ubiquitination and deubiquitination" @default.
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