Circadian ClocksCLOCK ProteinsCircadian RhythmBiological ClocksPeriod Circadian ProteinsARNTL Transcription FactorsCryptochromesMammalsPhotoperiodCircadian Rhythm Signaling Peptides and ProteinsSuprachiasmatic NucleusLightNuclear Receptor Subfamily 1, Group D, Member 1FlavoproteinsDarknessFeedback, PhysiologicalArabidopsisChronobiology DisordersArabidopsis ProteinsTranscription FactorsGene Expression Regulation, PlantCasein Kinase IepsilonGene Expression RegulationPhotoreceptor Cells, InvertebrateBasic Helix-Loop-Helix Transcription FactorsDrosophila ProteinsSynechococcusNuclear ProteinsNeurospora crassaActivity CyclesMelatoninLight Signal TransductionMotor ActivityE-Box ElementsPineal GlandModels, BiologicalMutationCasein Kinase IdeltaJet Lag SyndromeDrug ChronotherapyOscillometryCell Cycle ProteinsMolecular Sequence DataDrosophilaPeriodicityDrosophila melanogasterTrans-ActivatorsNeurosporaFlowersRNA, MessengerArylalkylamine N-AcetyltransferaseHypocotylTranscription, GeneticAnimals, Genetically ModifiedGenes, PlantEye ProteinsDiapause, InsectTime FactorsLuciferasesTemperaturePhytochromePhylogenyMice, Inbred C57BLCyanobacteriaPhotobiologyNIH 3T3 CellsPhytochrome BBehavior, AnimalAmino Acid SequenceSignal TransductionNuclear Receptor Subfamily 1, Group F, Member 1Rod OpsinsLuminescenceChronobiology PhenomenaCasein Kinase IRNA, PlantSleep Disorders, Circadian RhythmPromoter Regions, GeneticChronotherapyFeedbackPlants, Genetically ModifiedSleepZebrafishFeeding BehaviorPhenotypeLocomotionEvolution, MolecularBiological EvolutionDNA-Binding ProteinsNeuropeptidesMesocricetusReceptors, G-Protein-CoupledSolar SystemMice, KnockoutNeuronsInsect ProteinsPhosphorylationGene Expression ProfilingGenes, InsectBase Sequence