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Differential Functions of mPer1, mPer2, and mPer3 in the SCN Circadian Clock
The role of mPer1 and mPer2 in regulating circadian rhythms was assessed by disrupting these genes. Mice homozygous for the targeted allele of either mPer1 or mPer2 had severely disrupted locomotor… Expand
The Drosophila CLOCK Protein Undergoes Daily Rhythms in Abundance, Phosphorylation, and Interactions with the PER–TIM Complex
We report the in vivo characterization of the Drosophila CLOCK protein (dCLOCK), a transcription factor that is required for the expression of the circadian clock genes period (per) and timeless… Expand
Resetting the Drosophila Clock by Photic Regulation of PER and a PER-TIM Complex
Circadian clocks can be reset by light stimulation. To investigate the mechanism of this phase shifting, the effects of light pulses on the protein and messenger RNA products of the Drosophila clock… Expand
dCLOCK Is Present in Limiting Amounts and Likely Mediates Daily Interactions between the dCLOCK–CYC Transcription Factor and the PER–TIM Complex
In Drosophila melanogaster four circadian clock proteins termed PERIOD (PER), TIMELESS (TIM), dCLOCK (dCLK), and CYCLE (CYC/dBMAL1) function in a transcriptional feedback loop that is a core element… Expand
PER and TIM Inhibit the DNA Binding Activity of aDrosophila CLOCK-CYC/dBMAL1 Heterodimer without Disrupting Formation of the Heterodimer: a Basis for Circadian Transcription
ABSTRACT The Drosophila CLOCK (dCLOCK) and CYCLE (CYC) (also referred to as dBMAL1) proteins are members of the basic helix-loop-helix PAS (PER-ARNT-SIM) superfamily of transcription factors and are… Expand
Circadian Regulation of a Drosophila Homolog of the Mammalian Clock Gene: PER and TIM Function as Positive Regulators
- K. Bae, C. Lee, D. Sidote, K. Chuang, I. Edery
- Biology, Medicine
- Molecular and Cellular Biology
- 1 October 1998
ABSTRACT The Clock gene plays an essential role in the manifestation of circadian rhythms (≅24 h) in mice and is a member of the basic helix-loop-helix (bHLH) PER-ARNT-SIM (PAS) superfamily of… Expand
Drosophila CLOCK Protein Is under Posttranscriptional Control and Influences Light-Induced Activity
In the Drosophila circadian clock, daily cycles in the RNA levels of dclock (dClk) are antiphase to those of period (per). We altered the timing/levels of dClk expression by generating transgenic… Expand
Regulating a circadian clock's period, phase and amplitude by phosphorylation: insights from Drosophila.
Much progress has been made in understanding the molecular underpinnings governing circadian ( approximately 24 h) rhythms. Despite the increased complexity in metazoans whereby inter-cellular… Expand
A proteomic assessment of muscle contractile alterations during unloading and reloading.
Unloading of skeletal muscle causes atrophy and altered contractility. To identify major muscle proteins responding significantly to the altered loading and to elucidate how the contractile… Expand
Differential effects of two period genes on the physiology and proteomic profiles of mouse anterior tibialis muscles.
- K. Bae, K. Lee, Younguk Seo, Haesang Lee, D. Kim, I. Choi
- Biology, Medicine
- Molecules and cells
- 31 December 2006
The molecular components that generate and maintain circadian rhythms of physiology and behavior in mammals are present both in the brain (suprachiasmatic nucleus; SCN) and in peripheral tissues.… Expand