title: PAS, present, and future: clues to the origins of circadian clocks.
authors.affiliation: National Science Foundation Center for Biological Timing, Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. stevek@scripps.edu
authors.forename: S A
authors.initials: SA
authors.lastname: Kay
mesh_terms: D000818:Animals; D001683:Biological Clocks; D002940:Circadian Rhythm; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics / Q000502:physiology*; D004330:Drosophila / Q000235:genetics / Q000502:physiology; D029721:Drosophila Proteins; D005656:Fungal Proteins / Q000235:genetics / Q000502:physiology; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal; D008027:Light; D009491:Neurospora / Q000737:chemistry / Q000235:genetics / Q000502:physiology*; D009687:Nuclear Proteins / Q000737:chemistry / Q000235:genetics / Q000502:physiology; D056950:Period Circadian Proteins; D015398:Signal Transduction; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000502:physiology*
chemical_list: D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; C087405:FRQ protein, Neurospora crassa; D005656:Fungal Proteins; D009687:Nuclear Proteins; C539040:PER protein, Drosophila; D056950:Period Circadian Proteins; D014157:Transcription Factors; C105589:wc-1 protein, Neurospora crassa; C103772:white collar 2 protein, Neurospora