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Title: A general strategy to construct small molecule biosensors in eukaryotes

Journal Article · · eLife
DOI:https://doi.org/10.7554/eLife.10606· OSTI ID:1235744

Biosensors for small molecules can be used in applications that range from metabolic engineering to orthogonal control of transcription. Here, we produce biosensors based on a ligand-binding domain (LBD) by using a method that, in principle, can be applied to any target molecule. The LBD is fused to either a fluorescent protein or a transcriptional activator and is destabilized by mutation such that the fusion accumulates only in cells containing the target ligand. We illustrate the power of this method by developing biosensors for digoxin and progesterone. Addition of ligand to yeast, mammalian, or plant cells expressing a biosensor activates transcription with a dynamic range of up to ~100-fold. We use the biosensors to improve the biotransformation of pregnenolone to progesterone in yeast and to regulate CRISPR activity in mammalian cells. As a result, this work provides a general methodology to develop biosensors for a broad range of molecules in eukaryotes.

Research Organization:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02- 02ER63445; FG02-02ER63445
OSTI ID:
1235744
Alternate ID(s):
OSTI ID: 1235745; OSTI ID: 1258761
Journal Information:
eLife, Journal Name: eLife Vol. 4; ISSN 2050-084X
Publisher:
eLife Sciences Publications, Ltd.Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 112 works
Citation information provided by
Web of Science

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