The molecular dance in biological beings is one of the most fascinating orchestrations in the micro-world, and the processes governing this tango are unanimously acknowledged to be mysteriously byzantine.

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In cells, enzymes are the basis of the natural circuits that switch genes on and off, maintain biological rhythms and produce molecular answers in response to environmental stimuli.

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Hall, Michael Rosbash and Michael W. Young "for their discovery of molecular mechanisms underlying circadian rhythms, " the committee said, which are guided by biological clocks and drive the waking and sleeping cycle.

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