113 results found
    1. Physics of Living Systems

    Robust, coherent, and synchronized circadian clock-controlled oscillations along Anabaena filaments

    Rinat Arbel-Goren et al.
    Noisy circadian clocks in Anabaena, coupled by cell-cell communication, display high spatio-temporal coherence and can be robustly described by incorporating demographic noise in a theoretical model of coupled clock arrays.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Biophysical clocks face a trade-off between internal and external noise resistance

    Weerapat Pittayakanchit et al.
    Molecular clocks that are robust to external fluctuations are vulnerable to internal fluctuations and vice versa.
    1. Genetics and Genomics
    2. Neuroscience

    Lhx1 maintains synchrony among circadian oscillator neurons of the SCN

    Megumi Hatori et al.
    A transcription factor called Lhx1 coordinates the activity of the brain's master circadian clock, the suprachiasmatic nucleus, by controlling communication between its constituent cells.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    The cyanobacterial circadian clock follows midday in vivo and in vitro

    Eugene Leypunskiy et al.
    The cyanobacterial core clock tracks midday regardless of day length, which can be understood in terms of a model for how the environment alters the clock limit cycle.
    1. Cell Biology

    Transcriptomic analyses reveal rhythmic and CLOCK-driven pathways in human skeletal muscle

    Laurent Perrin et al.
    Rhythmic transcriptome analyses of human skeletal muscle tissue and cultured primary myotubes reveal an essential role for the circadian coordination of glucose homeostasis and lipid metabolism in human skeletal muscle.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Cyclin-dependent kinase 5 (CDK5) regulates the circadian clock

    Andrea Brenna et al.
    Cyclin-dependent kinase 5 regulates the circadian clock involving phosphorylation of the PER2 protein.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Acetylation of BMAL1 by TIP60 controls BRD4-P-TEFb recruitment to circadian promoters

    Nikolai Petkau et al.
    Acetylation of the circadian transcription factor BMAL1 by the acetyltransferase TIP60 is crucial for recruitment of the pause release factors to clock gene promoters and productive elongation of these genes.
    1. Genetics and Genomics
    2. Neuroscience

    Neural clocks and Neuropeptide F/Y regulate circadian gene expression in a peripheral metabolic tissue

    Renske Erion et al.
    Neuropeptide F/Y from neurons drives rhythmic expression of detoxification-related genes in a peripheral metabolic tissue in flies and mice.
    1. Neuroscience

    Differential effects of light and feeding on circadian organization of peripheral clocks in a forebrain Bmal1 mutant

    Mariko Izumo et al.
    Conditional deletion of Bmal1 in the forebrain/SCN reveals an essential role of a functional master clock in maintaining synchronized and high amplitude rhythms of peripheral clocks.
    1. Neuroscience

    A highly tunable dopaminergic oscillator generates ultradian rhythms of behavioral arousal

    Ian D Blum et al.
    An internal clock based on brain levels of dopamine works with the circadian clock to maintain daily patterns of alertness and activity, and may be implicated in the altered behavioral patterns seen in schizophrenia and bipolar disorder.

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