2016
DOI: 10.1038/nature19841
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Synchronous long-term oscillations in a synthetic gene circuit

Abstract: Synthetically engineered genetic circuits can perform a wide range of tasks but generally with lower accuracy than natural systems. Here we revisited the first synthetic genetic oscillator, the repressilator1, and modified it based on principles from stochastic chemistry in single cells. Specifically, we sought to reduce error propagation and information losses, not by adding control loops, but by simply removing existing features. This created highly regular and robust oscillations. Some streamlined circuits … Show more

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Cited by 292 publications
(404 citation statements)
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“…Some of these have been particularly useful in highlighting features that can make great differences to the precision of systems, some of which might be counter-intuitive. An example identified by Potvin-Trottier et al (2016) and reviewed by Gao and Elowitz (2016) is the noise inherent in very high-affinity transcriptional repressor systems. The TetR protein has a high affinity for its operator site and, as cellular concentrations of TetR fall, re-expression of genes from operator sites happens when the concentration of TetR protein has dropped to about five protein molecules per cell.…”
Section: Box 1 Glossarymentioning
confidence: 99%
“…Some of these have been particularly useful in highlighting features that can make great differences to the precision of systems, some of which might be counter-intuitive. An example identified by Potvin-Trottier et al (2016) and reviewed by Gao and Elowitz (2016) is the noise inherent in very high-affinity transcriptional repressor systems. The TetR protein has a high affinity for its operator site and, as cellular concentrations of TetR fall, re-expression of genes from operator sites happens when the concentration of TetR protein has dropped to about five protein molecules per cell.…”
Section: Box 1 Glossarymentioning
confidence: 99%
“…Схема регуляторной цепи репрессилятора [Elowitz, Leibler, 2000] с учетом важных моди-фикаций, предложенных в работе [Potvin-Trottier et al, 2016], представлена на рис. 1.…”
Section: вывод математической модели репрессилятора с запаздываниемunclassified
“…В исходной версии ре-прессилятора 2000 года ген gfp-aav, кодирующий GFP, был размещен на отдельной плазмиде. Как было продемонстрировано недавно [Potvin-Trottier et al, 2016], это приводит к возникно-вению сильных флуктуаций в работе репрессилятора из-за удаленной регуляции. Поэтому в новой версии ген, кодирующий сигнальный белок, был перенесен на ту же самую плазмиду, где располагаются основные игроки репрессилятора (второй цистрон).…”
Section: вывод математической модели репрессилятора с запаздываниемunclassified
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“…In a physical sense, this entails proper selection of internal and external factors which influence network behavior. Internal factors function as a closed feedback control loop within the cell and include the selection of cell type, GRN topology and motifs, and specific components comprising the GRN: promoters driving individual gene's expression [8,27], transcription factors modulating expression of downstream genes [16,18], localization signals or synthetic protein domains affecting protein interactions [23,28,29], etc. Once put into the cell, many of these components do not leave researchers with a direct means of interaction.…”
Section: Introductionmentioning
confidence: 99%