Accurate prediction of gene feedback circuit behavior from component properties.

Accurate prediction of gene feedback circuit behavior from component properties.
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DOI:
10.1038/msb4100185
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发表时间:
2007
影响因子:
9.9
通讯作者:
--
中科院分区:
生物学1区
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--
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合成生物学的一个基本假设是,对基因电路元件(如调节蛋白和启动子)的分析可以用来理解和预测包含这些元件的电路的行为。为了验证这一假设,我们使用延时荧光显微镜定量分析两个自动调节负反馈电路。通过测量相应的阻遏物-启动子相互作用的基因调控功能,我们准确地预测了分子单位的自动调节反馈环的表达水平。这表明,定量表征的调控元件可以预测的行为,遗传电路支持合成生物学的基本要求。
A basic assumption underlying synthetic biology is that analysis of genetic circuit elements, such as regulatory proteins and promoters, can be used to understand and predict the behavior of circuits containing those elements. To test this assumption, we used time-lapse fluorescence microscopy to quantitatively analyze two autoregulatory negative feedback circuits. By measuring the gene regulation functions of the corresponding repressor–promoter interactions, we accurately predicted the expression level of the autoregulatory feedback loops, in molecular units. This demonstration that quantitative characterization of regulatory elements can predict the behavior of genetic circuits supports a fundamental requirement of synthetic biology.
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