Circadian Timing Mechanism in the Prokaryotic Clock System of Cyanobacteria

Cyanobacteria demonstrate complex circadian rhythms through multiple feedback processes.

• Cyanobacteria are the simplest organisms known to exhibit circadian rhythms.
• The molecular and genetic mechanisms involved in circadian rhythm generation in cyanobacteria are explored.
• Recent findings have identified multiple feedback processes within the prokaryotic circadian system.
• A novel molecular oscillator model has been proposed based on these analyses.
• Current understanding and open questions regarding the cyanobacterial oscillator are summarized.

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