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Circadian clock: Biological timepiece assembled in a test tube

Bacteria circadian clock protein molecule

Pc mannequin exhibiting the molecular construction of a circadian clock Kai protein present in cyanobacteria

LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

A circadian clock has been recreated in full inside a take a look at tube. It’s the first time the mobile pacemaker has been produced outdoors a residing organism.

The clock, copied from a cyanobacteria, was devised by Carrie Partch on the College of California, Santa Cruz, and her colleagues. It’s constructed from six proteins and may work with none human intervention for a number of days. “I feel the report we’ve obtained to date is 2 weeks,” says …

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