Circadian ClocksCLOCK ProteinsCircadian RhythmBiological ClocksPeriod Circadian ProteinsARNTL Transcription FactorsCryptochromesPhotoperiodCircadian Rhythm Signaling Peptides and ProteinsSuprachiasmatic NucleusLightNuclear Receptor Subfamily 1, Group D, Member 1FlavoproteinsDarknessFeedback, PhysiologicalChronobiology DisordersArabidopsisArabidopsis ProteinsGene Expression Regulation, PlantCasein Kinase IepsilonTranscription FactorsPhotoreceptor Cells, InvertebrateBasic Helix-Loop-Helix Transcription FactorsGene Expression RegulationSynechococcusDrosophila ProteinsNeurospora crassaActivity CyclesNuclear ProteinsLight Signal TransductionMelatoninMotor ActivityE-Box ElementsPineal GlandCasein Kinase IdeltaMutationJet Lag SyndromeDrug ChronotherapyModels, BiologicalOscillometryCell Cycle ProteinsMammalsPeriodicityNeurosporaTrans-ActivatorsFlowersDrosophilaArylalkylamine N-AcetyltransferaseHypocotylDrosophila melanogasterGenes, PlantDiapause, InsectRNA, MessengerEye ProteinsPhytochromeTranscription, GeneticLuciferasesCyanobacteriaTemperaturePhotobiologyAnimals, Genetically ModifiedPhytochrome BTime FactorsNIH 3T3 CellsMice, Inbred C57BLNuclear Receptor Subfamily 1, Group F, Member 1Molecular Sequence DataLuminescenceChronobiology PhenomenaCasein Kinase IBehavior, AnimalRod OpsinsSleep Disorders, Circadian RhythmRNA, PlantChronotherapySignal TransductionFeedbackPlants, Genetically ModifiedNeuropeptidesSleepPromoter Regions, GeneticSolar SystemMesocricetusInsect ProteinsReceptors, G-Protein-CoupledPhosphorylationPhenotypeFeeding BehaviorDNA-Binding ProteinsMice, KnockoutLocomotionNeuronsLuminescent MeasurementsGenes, InsectMoonPlant Physiological PhenomenaGene Expression ProfilingFungal ProteinsFagaceaeZebrafish