Harnessing Escherichia coli's Native Machinery for Detection of Vitamin C (Ascorbate) Deficiency.
Harnessing Escherichia coli's Native Machinery for Detection of Vitamin C (Ascorbate) Deficiency.
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DOI:
10.1021/acssynbio.2c00335
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发表时间:
2022-11-18
影响因子:
4.7
通讯作者:
Styczynski, Mark P.
中科院分区:
文献类型:
--
作者:
Piorino, Fernanda;Styczynski, Mark P.
Vitamin C (L-ascorbate) deficiency is a global public health issue most prevalent in resource-limited regions, creating a need for an inexpensive detection platform. Here, we describe efforts to engineer whole-cell and cell-free ascorbate biosensors. Both sensors used the protein UlaR, which binds to a metabolite of ascorbate and regulates transcription. The whole-cell sensor could detect lower, physiologically relevant concentrations of ascorbate, which we attributed to intact functionality of a phosphotransferase system (PTS) that transports ascorbate across the cell membrane and phosphorylates it to form UlaR’s ligand. We used multiple strategies to enhance cell-free PTS functionality (which has received little previous attention), improving the cell-free sensor’s performance, but the whole-cell sensor remained more sensitive. These efforts demonstrated an advantage of whole-cell sensors for detection of molecules—like ascorbate—transformed by a PTS, but also proof of principle for cell-free sensors requiring membrane-bound components like the PTS. These results set the stage for future implementation of ascorbate sensors for clinically relevant biofluids in field-deployable formats.
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影响因子:
8.4
作者:
McNerney MP;Styczynski MP
通讯作者:
Styczynski MP
影响因子:
4.6
作者:
Kwon YC;Jewett MC
通讯作者:
Jewett MC
DOI:
10.3791/50762
发表时间:
2013-09-16
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
作者:
Sun ZZ;Hayes CA;Shin J;Caschera F;Murray RM;Noireaux V
通讯作者:
Noireaux V
影响因子:
48
作者:
Gibson, Daniel G.;Young, Lei;Smith, Hamilton O.
通讯作者:
Smith, Hamilton O.
影响因子:
3.2
作者:
Yew, WS;Gerlt, JA
通讯作者:
Gerlt, JA