A single-input binary counting module based on serine integrase site-specific recombination
A single-input binary counting module based on serine integrase site-specific recombination
复制标题
基于丝氨酸整合酶位点特异性重组的单输入二进制计数模块
DOI:
10.1093/nar/gkz245
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发表时间:
2019
影响因子:
14.9
通讯作者:
Zhao J
中科院分区:
文献类型:
--
作者:
Zhao J
A device that counts and records the number of events experienced by an individual cell could have many uses in experimental biology and biotechnology. Here, we report a DNA-based ‘latch’ that switches between two states upon each exposure to a repeated stimulus. The key component of the latch is a DNA segment whose orientation is inverted by the actions of ϕC31 integrase and its recombination directionality factor (RDF). Integrase expression is regulated by an external input, while RDF expression is controlled by the state of the latch, such that the orientation of the invertible segment switches efficiently each time the device receives an input pulse. Recombination occurs over a time scale of minutes after initiation of integrase expression. The latch requires a delay circuit, implemented with a transcriptional repressor expressed in only one state, to ensure that each input pulse results in only one inversion of the DNA segment. Development and optimization of the latch in living cells was driven by mathematical modelling of the recombination reactions and gene expression regulated by the switch. We discuss howNlatches built with orthogonal site-specific recombination systems could be chained together to form a binary ripple counter that could count to 2N− 1.
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DOI:
--
发表时间:
2014
期刊:
--
影响因子:
--
作者:
Lei Yang;Alec A. K. Nielsen;J. Fernandez-Rodriguez;Conor J. McClune;M. Laub;T. Lu;Christopher A. Voigt-Christopher-A.
通讯作者:
Lei Yang;Alec A. K. Nielsen;J. Fernandez-Rodriguez;Conor J. McClune;M. Laub;T. Lu;Christopher A. Voigt-Christopher-A.
影响因子:
3.5
作者:
Xu Z;Thomas L;Davies B;Chalmers R;Smith M;Brown W
通讯作者:
Brown W
DOI:
10.1038/s41576-018-0052-8
发表时间:
2018-11
期刊:
Nature reviews. Genetics
影响因子:
--
作者:
Sheth RU;Wang HH
通讯作者:
Wang HH
影响因子:
--
作者:
Biliouris K;Daoutidis P;Kaznessis YN
通讯作者:
Kaznessis YN
影响因子:
--
作者:
S. Janga;M. M. Babu
通讯作者:
M. M. Babu