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- W3037930172 abstract "We present a new concept for whole-cell biosensors that couples the response to Hg2+ with bioluminescence and bacterial aggregation. This allows us to use the bacterial aggregation to preconcentrate the bioluminescent bacteria at the substrate surface and increase the sensitivity of Hg2+ detection. This whole-cell biosensor combines a Hg2+-sensitive bioluminescence reporter and light-responsive bacterial cell–cell adhesions. We demonstrate that the blue luminescence in response to Hg2+ is able to photoactivate bacterial aggregation, which provides a second readout for Hg2+ detection. In return, the Hg2+-triggered bacterial aggregation leads to faster sedimentation and more efficient formation of biofilms. At low Hg2+ concentrations, the enrichment of the bacteria in biofilms leads to an up to 10-fold increase in the signal. The activation of photoswitchable proteins with biological light is a new concept in optogenetics, and the presented bacterial biosensor design is transferable to other bioluminescent reporters with particular interest for environmental monitoring." @default.
- W3037930172 created "2020-07-02" @default.
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- W3037930172 date "2020-06-25" @default.
- W3037930172 modified "2023-09-27" @default.
- W3037930172 title "Bioluminescence-Triggered Photoswitchable Bacterial Adhesions Enable Higher Sensitivity and Dual-Readout Bacterial Biosensors for Mercury" @default.
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- W3037930172 doi "https://doi.org/10.1021/acssensors.0c00855" @default.
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