Results 21 to 30 of about 356,744 (339)

Circadian fluctuations of period protein immunoreactivity in the CNS and the visual system of Drosophila [PDF]

open access: hybridThe Journal of Neuroscience, 1990
When the protein encoded by the period (per) gene, which influences circadian rhythms in Drosophila melanogaster, was labeled with an anti- per antibody in adult flies sectioned at different times of day, regular fluctuations in the intensity of immunoreactivity were observed in cells of the visual system and central brain. These fluctuations persisted
DM Zerr   +3 more
openalex   +5 more sources

Nuclear Envelope Protein MAN1 Regulates the Drosophila Circadian Clock via Period

open access: greenNeuroscience Bulletin, 2019
Almost all organisms exhibit ~24-h rhythms, or circadian rhythms, in a plentitude of biological processes. These rhythms are driven by endogenous molecular clocks consisting of a series of transcriptional and translational feedback loops. Previously, we have shown that the inner nuclear membrane protein MAN1 regulates this clock and thus the locomotor ...
Bei Bu   +3 more
openalex   +4 more sources

Suppression of PERIOD protein abundance and circadian cycling by the Drosophila clock mutation timeless. [PDF]

open access: bronzeThe EMBO Journal, 1995
The timeless mutation (tim) leads to loss of circadian behavioral rhythms in Drosophila melanogaster. The effects of tim on rhythmicity involve interactions with period (per), a second essential clock gene, as the tim mutation suppresses circadian oscillations of per transcription and blocks nuclear localization of a PER reporter protein.
Jeffrey L. Price   +3 more
openalex   +4 more sources

A Heteromeric RNA-Binding Protein Is Involved in Maintaining Acrophase and Period of the Circadian Clock [PDF]

open access: bronzePlant Physiology, 2006
Abstract The RNA-binding protein CHLAMY1 from the green alga Chlamydomonas reinhardtii consists of two subunits. One (named C1) contains three lysine homology motifs and the other (named C3) has three RNA recognition motifs. CHLAMY1 binds specifically to uridine-guanine-repeat sequences and its circadian-binding activity is controlled at
Dobromir Iliev   +5 more
openalex   +4 more sources

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

open access: bronzeNeuron, 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.
Kathryn D. Curtin   +2 more
openalex   +4 more sources

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

open access: bronzeNeuron, 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
Ivo Šauman   +3 more
openalex   +5 more sources

KidA, a multi-PAS domain protein, tunes the period of the cyanobacterial circadian oscillator

open access: hybridProceedings of the National Academy of Sciences, 2022
The cyanobacterial clock presents a unique opportunity to understand the biochemical basis of circadian rhythms. The core oscillator, composed of the KaiA, KaiB, and KaiC proteins, has been extensively studied, but a complete picture of its connection to the physiology of the cell is lacking.
Soo Ji Kim   +4 more
openalex   +4 more sources

CAVIN‐3 regulates circadian period length and PER:CRY protein abundance and interactions [PDF]

open access: greenEMBO reports, 2012
In mammals, transcriptional autorepression by Period (PER) and Cryptochrome (CRY) protein complexes is essential for the generation of circadian rhythms. We have identified CAVIN-3 as a new, cytoplasmic PER2-interacting protein influencing circadian clock properties.
Kim Schneider   +5 more
openalex   +4 more sources

Cellular DBP and E4BP4 proteins are critical for determining the period length of the circadian oscillator

open access: yesFEBS Letters, 2011
The phenotypes of mice carrying clock gene mutations have been critical to understanding the mammalian clock function. However, behavior does not necessarily reflect cell-autonomous clock phenotypes, because of the hierarchical dominance of the central clock.
Daisuke Yamajuku   +8 more
semanticscholar   +4 more sources

Temperature synchronization of the Drosophila circadian clock protein PERIOD is controlled by the TRPA channel PYREXIA [PDF]

open access: goldCommunications Biology, 2019
AbstractCircadian clocks are endogenous molecular oscillators that temporally organize behavioral activity thereby contributing to the fitness of organisms. To synchronize the fly circadian clock with the daily fluctuations of light and temperature, these environmental cues are sensed both via brain clock neurons, and by light and temperature sensors ...
Sanne Roessingh   +6 more
openalex   +5 more sources

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