In most species--from cyanobacteria to humans--endogenous clocks have evolved that drive 24-h rhythms of behavior and physiology. In mammals, these circadian rhythms are regulated by a hierarchical network of cellular oscillators controlled by a set of clock genes organized in a system of interlocked transcriptional feedback loops.
Landgraf, D., Shostak, A., Oster, H.
openaire +3 more sources
Alternative Splicing of Circadian Clock Genes Correlates With Temperature in Field-Grown Sugarcane [PDF]
Alternative Splicing (AS) is a mechanism that generates different mature transcripts from precursor mRNAs (pre-mRNAs) of the same gene. In plants, a wide range of physiological and metabolic events are related to AS, as well as fast responses to changes ...
Alabadí +111 more
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Modeling circadian variability of core-clock and clock-controlled genes in four tissues of the rat. [PDF]
Circadian clocks, present in almost all cells of the body, are entrained to rhythmic changes in the environment (e.g. light/dark cycles). Genes responsible for this timekeeping are named core-clock genes, which through transcriptional feedback ...
Panteleimon D Mavroudis +3 more
doaj +1 more source
A bioinformatic analysis identifies circadian expression of splicing factors and time-dependent alternative splicing events in the HD-MY-Z cell line [PDF]
The circadian clock regulates key cellular processes and its dysregulation is associated to several pathologies including cancer. Although the transcriptional regulation of gene expression by the clock machinery is well described, the role of the clock ...
Abreu, Mónica +4 more
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Accurate timekeeping is controlled by a cycling activator in Arabidopsis. [PDF]
Transcriptional feedback loops are key to circadian clock function in many organisms. Current models of the Arabidopsis circadian network consist of several coupled feedback loops composed almost exclusively of transcriptional repressors.
Devisetty, Upendra K +2 more
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Asymmetric expression level of clock genes in left vs. right nasal mucosa in humans with and without allergies and in rats: Circadian characteristics and possible contribution to nasal cycle. [PDF]
Numerous peripheral tissues possess self-sustaining daily biologic rhythms that are regulated at the molecular level by clock genes such as PER1, PER2, CLOCK, and BMAL1.
Ha Kyun Kim +4 more
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This study investigates differences in expression of clock and clock-controlled genes (CCGs) between human breast epithelial and breast cancer cells and breast tumor xenografts in circadian intact rats and examines if the pineal hormone melatonin ...
S. Xiang +8 more
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Strawberry is an economically important fruit crop worldwide. Circadian clock genes are endogenous timers that regulate a wide range of metabolic processes and consequently plant development.
X. D. Chen, J. Wang, M. Z. Zhao, F. Zhao
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The mammalian molecular clock is based on a transcription-translation feedback loop (TTFL) comprising the Period1, 2 (Per1, 2), Cryptochrome1, 2 (Cry1, 2), and Brain and Muscle ARNT-Like 1 (Bmal1) genes.
Boil Kim +7 more
doaj +1 more source
Contribution of time of day and the circadian clock to the heat stress responsive transcriptome in Arabidopsis. [PDF]
In Arabidopsis, a large subset of heat responsive genes exhibits diurnal or circadian oscillations. However, to what extent the dimension of time and/or the circadian clock contribute to heat stress responses remains largely unknown.
Blair, Emily J +6 more
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