Journal
JOURNAL OF BIOLOGICAL RHYTHMS
Volume 24, Issue 3, Pages 175-182Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0748730409333953
Keywords
cyanobacteria; circadian clock; evolution; KaiC; phoscillator; transcription translation loop; hourglass
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Funding
- Netherlands Organization for Scientific Research (NWO)
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Cyanobacteria were among the 1st organisms to evolve on earth. The molecular circadian clock proteins of cyanobacteria and their phylogenetics have recently been elucidated. This allows for a conjecture on the evolution of 1 of the 1st circadian clocks. A scenario has now been created by combining known in vitro and in vivo properties of the 3 clock proteins of cyanobacteria (KaiA, KaiB, and KaiC). This scenario describes the evolution of the cyanobacterial clock in gradual steps: evolving from a masking mechanism, toward an hourglass, into a clock.
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