The stochastic nature of every chemical event in the cell generates noise that can lead to large fluctuations in protein and mRNA levels. Autoregulatory negative feedback loops in gene circuits have been proposed, but never shown, to be one way of limiting this variation. With a simple experiment, in the 1 June
Gene, regulate thyself
The stochastic nature of every chemical event in the cell generates noise that can lead to large fluctuations in protein and mRNA levels. Autoregulatory negative feedback loops in gene circuits have been proposed, but never shown, to be one way of limiting this variation. With a simple experiment, in the 1 June Nature Becskei and Serrano demonstrate that negative feedback can decrease the inherent variability of gene expression more than threefold. They direct expression of a hybrid protein (gre

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William Wells
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