Bacterial autoinducer-2 detection via an engineered quorum sensing protein

Nilesh Raut; Smita Joel; Patrizia Pasini; Sylvia Daunert

doi:10.1021/ac504172f

Bacterial autoinducer-2 detection via an engineered quorum sensing protein

Nilesh Raut, Smita Joel, Patrizia Pasini, Sylvia Daunert

Biochemistry & Molecular Biology

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Autoinducer-2 (AI-2) is a Quorum Sensing (QS) molecule utilized by bacteria in interspecies communication. More recently, it is identified to be vital in regulating QS pathways in a number of human and foodborne pathogens. Methods to detect AI-2 in a rapid and highly sensitive manner can help in the early detection of bacterial infections. Herein, we describe a rapid, selective, and highly sensitive protein based biosensing system employing the Fluorescence Resonance Energy Transfer (FRET) between a protein fusion LuxP-EGFP and 7-diethylamino-3-[N-(2-maleimidoethyl)carbamoyl]coumarin (MDCC). The developed biosensing system, which can detect AI-2 at subnanomolar levels, was successfully applied to detect AI-2 in clinical samples such as saliva and blood serum.

Original language	English
Pages (from-to)	2608-2614
Number of pages	7
Journal	Analytical Chemistry
Volume	87
Issue number	5
DOIs	https://doi.org/10.1021/ac504172f
State	Published - Mar 3 2015

ASJC Scopus subject areas

Analytical Chemistry

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Bacterial autoinducer-2 detection via an engineered quorum sensing protein

Abstract

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