Harnessing a previously unidentified capability of bacterial allosteric transcription factors for sensing diverse small molecules in vitro.
Harnessing a previously unidentified capability of bacterial allosteric transcription factors for sensing diverse small molecules in vitro.
复制标题
利用细菌变构转录因子先前未知的能力在体外感测不同的小分子。
DOI:
10.1126/sciadv.aau4602
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发表时间:
2018-11
期刊:
影响因子:
13.6
通讯作者:
Zhang L
中科院分区:
文献类型:
--
作者:
Cao J;Yao Y;Fan K;Tan G;Xiang W;Xia X;Li S;Wang W;Zhang L
We develop a novel biosensing platform for the detection of diverse small molecules. A plethora of bacterial allosteric transcription factors (aTFs) have been identified to sense a variety of small molecules. Introduction of a novel aTF-based approach to sense diverse small molecules in vitro will signify a broad series of detection applications. Here, we found that aTFs could interact with their nicked DNA binding sites. Building from this new finding, we designed and implemented a novel aTF-based nicked DNA template–assisted signal transduction system (aTF-NAST) by using the competition between aTFs and T4 DNA ligase to bind to the nicked DNA. This aTF-NAST could reliably and modularly transduce the signal of small molecules recognized by aTFs to the ligated DNA signal, thus enabling the small molecules to be measured via various mature and robust DNA detection methods. Coupling this aTF-NAST with three DNA detection methods, we demonstrated nine novel biosensors for the detection of an antiseptic 4-hydroxybenzoic acid, a disease marker uric acid and an antibiotic tetracycline. These biosensors show impressive sensitivity and robustness in real-life analysis, highlighting the great potential of our aTF-NAST for biosensing applications.
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影响因子:
6.2
作者:
Cai, Nan;Tan, Lu;Su, Xingguang
通讯作者:
Su, Xingguang
影响因子:
6.2
作者:
Ballesta-Claver, J.;Rodriguez-Gomez, R.;Capitan-Vallvey, L. F.
通讯作者:
Capitan-Vallvey, L. F.
影响因子:
2.1
作者:
Bahl, MI;Hansen, LH;Sorensen, SJ
通讯作者:
Sorensen, SJ
影响因子:
6.1
作者:
Dai, Mengzhen;Huang, Ting;Meng, Wenhua
通讯作者:
Meng, Wenhua
影响因子:
4.2
作者:
Chen, Li-Xian;Zheng, Jie-Ning;Feng, Jiu-Ju
通讯作者:
Feng, Jiu-Ju