title: Cyanobacterial circadian clocks--timing is everything.
abstract: For more than three billion years, the organisms on this planet have known, like Little Orphan Annie, that "The sun'll come out tomorrow", and many have honed their biochemistry to exploit this knowledge. The cyanobacteria have had ample time to fashion a suitable timepiece, as they are among the oldest inhabitants of the earth. For these organisms, light is food, and it is a nutrient that shows up at the same time every day. Not surprisingly, cyanobacteria have learned to arrange their days around dinnertime.
authors.affiliation: Department of Biology, Texas A&M University, College Station, Texas 77843-3258, USA. sgolden@tamu.edu
authors.forename: Susan S
authors.initials: SS
authors.lastname: Golden
authors.forename: Shannon R
authors.initials: SR
authors.lastname: Canales
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D001683:Biological Clocks; D002940:Circadian Rhythm; D000458:Cyanobacteria / Q000235:genetics / Q000502:physiology*; D015964:Gene Expression Regulation, Bacterial; D015398:Signal Transduction
chemical_list: D001426:Bacterial Proteins