Results 51 to 60 of about 43,915 (298)

USP7 and TDP-43: Pleiotropic Regulation of Cryptochrome Protein Stability Paces the Oscillation of the Mammalian Circadian Clock.

open access: yesPLoS ONE, 2016
Mammalian Cryptochromes, CRY1 and CRY2, function as principal regulators of a transcription-translation-based negative feedback loop underlying the mammalian circadian clockwork.
Arisa Hirano   +6 more
doaj   +1 more source

Period Protein Is Necessary for Circadian Control of Egg Hatching Behavior in the Silkmoth Antheraea pernyi [PDF]

open access: yesNeuron, 1996
We examined the molecular basis of the circadian control of egg hatching behavior in the silkmoth Antheraea pernyi. Egg hatching is rhythmically gated, persists under constant darkness, and can be entrained by light by midembryogenesis. The time of appearance of photic entrainment by the silkmoth embryo coincides with the appearance of Period (PER) and
Sauman, Ivo   +3 more
openaire   +2 more sources

Generation of Human CRY1 and CRY2 Knockout Cells Using Duplex CRISPR/Cas9 Technology

open access: yesFrontiers in Physiology, 2019
Circadian clocks are endogenous oscillators essential for orchestrating daily rhythms in physiology, metabolism and behavior. While mouse models have been instrumental to elucidate the molecular mechanism of circadian rhythm generation, our knowledge ...
Teresa Börding   +10 more
doaj   +1 more source

Rheostatic Balance of Circadian Rhythm and Autophagy in Metabolism and Disease

open access: yesFrontiers in Cell and Developmental Biology, 2020
Circadian rhythms are physical, behavioral and environmental cycles that respond primarily to light and dark, with a period of time of approximately 24 h.
Xiang Wang   +8 more
doaj   +1 more source

Temporally regulated nuclear entry of the Drosophila period protein contributes to the circadian clock

open access: yesNeuron, 1995
The Drosophila period protein (PER) is a predominantly nuclear protein and a likely component of a circadian clock. PER is required for daily oscillations in the transcription of its own gene and thus participates in a circadian feedback loop.
Curtin, Kathryn D   +2 more
openaire   +2 more sources

Circadian Clock Neurons in the Silkmoth Antheraea pernyi: Novel Mechanisms of Period Protein Regulation [PDF]

open access: yesNeuron, 1996
We examined Period (PER) protein regulation in the brain of the silkmoth Antheraea pernyi. PER expression is restricted to the cytoplasm and axons of eight neurons, with no evidence of temporal movement into the nucleus. These neurons appear to be circadian clock cells, because PER and per mRNA are colocalized and their levels oscillate in these cells,
Sauman, Ivo, Reppert, Steven M
openaire   +2 more sources

Splice variants of DOMINO control Drosophila circadian behavior and pacemaker neuron maintenance.

open access: yesPLoS Genetics, 2019
Circadian clocks control daily rhythms in behavior and physiology. In Drosophila, the small ventral lateral neurons (sLNvs) expressing PIGMENT DISPERSING FACTOR (PDF) are the master pacemaker neurons generating locomotor rhythms.
Zhenxing Liu   +8 more
doaj   +1 more source

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

open access: yeseLife, 2019
Circadian oscillations emerge from transcriptional and post-translational feedback loops. An important step in generating rhythmicity is the translocation of clock components into the nucleus, which is regulated in many cases by kinases.
Andrea Brenna   +9 more
doaj   +1 more source

Transcriptional Feedback Loops in the Caprine Circadian Clock System

open access: yesFrontiers in Veterinary Science, 2022
The circadian clock system is based on interlocked positive and negative transcriptional and translational feedback loops of core clock genes and their encoded proteins.
Dengke Gao   +23 more
doaj   +1 more source

Age-Related Changes in the Expression of the Circadian Clock Protein PERIOD in Drosophila Glial Cells [PDF]

open access: yesFrontiers in Physiology, 2018
Circadian clocks consist of molecular negative feedback loops that coordinate physiological, neurological, and behavioral variables into "circa" 24-h rhythms. Rhythms in behavioral and other circadian outputs tend to weaken during aging, as evident in progressive disruptions of sleep-wake cycles in aging organisms.
Dani M. Long, Jadwiga M. Giebultowicz
openaire   +3 more sources

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