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024 7 _ |a 10.1021/acssynbio.1c00165
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100 1 _ |a Flachbart, Lion Konstantin
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245 _ _ |a Development of a Biosensor Platform for Phenolic Compounds Using a Transition Ligand Strategy
260 _ _ |a Washington, DC
|c 2021
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500 _ _ |a Biotechnolgie
520 _ _ |a The time-consuming and laborious characterization of protein or microbial strain designs limits the development of high-performance biocatalysts for biotechnological applications. Here, transcriptional biosensors emerged as valuable tools as they allow for rapid characterization of several thousand variants within a very short time. However, for many molecules of interest, no specific transcriptional regulator determining a biosensor’s specificity is available. We present an approach for rapidly engineering biosensor specificities using a semirational transition ligand approach combined with fluorescence-activated cell sorting. In this two-step approach, a biosensor is first evolved toward a more relaxed-ligand specificity before using the resulting variant as the starting point in a second round of directed evolution toward high specificity for several chemically different ligands. By following this strategy, highly specific biosensors for 4-hydroxybenzoic acid, p-coumaric acid, 5-bromoferulic acid, and 6-methyl salicylic acid were developed, starting from a biosensor for the intracellular detection of trans-cinnamic acid.
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700 1 _ |a Gertzen, Christoph Gerhard Wilhelm
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700 1 _ |a Gohlke, Holger
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700 1 _ |a Marienhagen, Jan
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773 _ _ |a 10.1021/acssynbio.1c00165
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|x 2161-5063
856 4 _ |u https://juser.fz-juelich.de/record/894465/files/Invoice_APC600235924.pdf
856 4 _ |u https://juser.fz-juelich.de/record/894465/files/acssynbio.1c00165.pdf
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