Chromatin remodeling and the circadian clock
نویسندگان
چکیده
منابع مشابه
Chromatin remodeling and the circadian clock: Jumonji C-domain containing proteins.
Circadian rhythms are a universal way for organisms, ranging from prokaryotes to humans, to maintain coordination with the daily changes of light and temperature. It is known that a functional circadian clock confers enhanced fitness. In both animals and plants, diverse physiological processes are affected by the clock and more than 10% of transcripts show a circadian rhythm. Recent advances in...
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Mammalian circadian rhythms are synchronized to the external time by daily resetting of the suprachiasmatic nucleus (SCN) in response to light. As the master circadian pacemaker, the SCN coordinates the timing of diverse cellular oscillators in multiple tissues. Aberrant regulation of clock timing is linked to numerous human conditions, including cancer, cardiovascular disease, obesity, various...
متن کاملThe NAD+-Dependent Deacetylase SIRT1 Modulates CLOCK-Mediated Chromatin Remodeling and Circadian Control
Circadian rhythms govern a large array of metabolic and physiological functions. The central clock protein CLOCK has HAT properties. It directs acetylation of histone H3 and of its dimerization partner BMAL1 at Lys537, an event essential for circadian function. We show that the HDAC activity of the NAD(+)-dependent SIRT1 enzyme is regulated in a circadian manner, correlating with rhythmic acety...
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The molecular machinery that governs circadian rhythmicity is based on clock gene products organized in regulatory feedback loops. Recently, we have shown that CLOCK, a master circadian regulator, has histone acetyltransferase activity essential for clock gene expression. The Lys-14 residue of histone H3 is a preferential target of CLOCK-mediated acetylation. As the role of chromatin remodeling...
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Gene expression is known to be a stochastic phenomenon. The stochastic gene expression rate is thought to be altered by topological change of chromosome and/or by chromatin modifications such as acetylation and methylation. Changes in mechanical properties of chromosome/chromatin by soluble factors, mechanical stresses from the environment, or metabolites determine cell fate, regulate cellular ...
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ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2011
ISSN: 1559-2324
DOI: 10.4161/psb.6.6.15171