title: Circadian rhythms: finer clock control.
authors.forename: J D
authors.initials: JD
authors.lastname: Alvarez
authors.forename: Amita
authors.initials: A
authors.lastname: Sehgal
mesh_terms: D056930:ARNTL Transcription Factors; D000818:Animals; D051792:Basic Helix-Loop-Helix Proteins; D001683:Biological Clocks / Q000235:genetics; D056926:CLOCK Proteins; D018797:Cell Cycle Proteins; D002940:Circadian Rhythm / Q000235:genetics; D056931:Cryptochromes; D029721:Drosophila Proteins; D005136:Eye Proteins; D025461:Feedback, Physiological; D005420:Flavoproteins / Q000235:genetics; D005786:Gene Expression Regulation; D018398:Homeodomain Proteins / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D009687:Nuclear Proteins / Q000235:genetics; D056950:Period Circadian Proteins; D017956:Photoreceptor Cells, Invertebrate; D043562:Receptors, G-Protein-Coupled; D015534:Trans-Activators / Q000378:metabolism; D014157:Transcription Factors / Q000737:chemistry / Q000378:metabolism*
chemical_list: D056930:ARNTL Transcription Factors; D051792:Basic Helix-Loop-Helix Proteins; D056926:CLOCK Proteins; D018797:Cell Cycle Proteins; D056931:Cryptochromes; D029721:Drosophila Proteins; D005136:Eye Proteins; D005420:Flavoproteins; D018398:Homeodomain Proteins; D009687:Nuclear Proteins; D056950:Period Circadian Proteins; D043562:Receptors, G-Protein-Coupled; D015534:Trans-Activators; D014157:Transcription Factors; C538960:BMAL1 protein, human; C107989:BHLHE40 protein, human; C422085:BHLHE41 protein, human; C539022:PER1 protein, human; C119828:cry protein, Drosophila; C538943:CLOCK protein, human