Tunable signal processing through modular control of transcription factor translocation.

Tunable signal processing through modular control of transcription factor translocation.
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DOI:
10.1126/science.1227299
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发表时间:
2013-01-25
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
O'Shea EK
O'Shea EK
中科院分区:
其他
文献类型:
--
作者:
Hao N;Budnik BA;Gunawardena J;O'Shea EK

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信号通路可以诱导不同的转录因子(TF)激活动力学。我们探讨了TF如何处理信号输入,以产生不同的动态响应。芽殖酵母一般应激响应TF Msn 2充当可调谐信号处理器,其可以以输入依赖的方式跟踪、过滤或整合信号。这种可调信号处理似乎起源于磷酸化对核输入和输出的双重调节,因为具有一种调节形式的突变体仅维持一种信号处理功能。Msn2的多功能信号处理对于对不同的自然应力产生不同的动态响应至关重要。我们的研究结果揭示了复杂的信号处理功能是如何整合到单个分子中的,并为具有“可编程”信号处理功能的TF的设计提供了指导。
Signaling pathways can induce different dynamics of transcription factor (TF) activation. We explored how TFs process signaling inputs to generate diverse dynamic responses. The budding yeast general stress responsive TF Msn2 acted as a tunable signal processor that could track, filter, or integrate signals in an input dependent manner. This tunable signal processing appears to originate from dual regulation of both nuclear import and export by phosphorylation, as mutants with one form of regulation sustained only one signal processing function. Versatile signal processing by Msn2 is crucial for generating distinct dynamic responses to different natural stresses. Our findings reveal how complex signal processing functions are integrated into a single molecule and provide a guide for the design of TFs with “programmable” signal processing functions.
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