New circadian timer? - The Scientist - Magazine of the Life Sciences


This study showed a chemical circadian rhythm in red blood cells, which lack DNA or transcriptional material. Peroxiredoxins help to inactivate reactive oxygen species (ROS) and are reduced and oxidised on a 24 hr cycle.

CLOCK genes are not the only mediators of circadian cycles 
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Peroxiredoxin by TimVickers at en.wikipedia [Public domain], from Wikimedia Commons

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