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Sensors 2016, 16(7), 950; doi:10.3390/s16070950

The β-Lactamase Assay: Harnessing a FRET Biosensor to Analyse Viral Fusion Mechanisms

Division of Structural Biology, University of Oxford, The Henry Wellcome Building for Genomic Medicine, Headington, Oxford, OX3 7BN, UK
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Authors to whom correspondence should be addressed.
Academic Editor: Niko Hildebrandt
Received: 5 May 2016 / Revised: 8 June 2016 / Accepted: 20 June 2016 / Published: 23 June 2016
(This article belongs to the Special Issue FRET Biosensors)
View Full-Text   |   Download PDF [1504 KB, uploaded 23 June 2016]   |  

Abstract

The β-lactamase (BlaM) assay was first revealed in 1998 and was demonstrated to be a robust Förster resonance energy transfer (FRET)-based reporter system that was compatible with a range of commonly-used cell lines. Today, the BlaM assay is available commercially as a kit and can be utilised readily and inexpensively for an array of experimental procedures that require a fluorescence-based readout. One frequent application of the BlaM assay is the measurement of viral fusion—the moment at which the genetic material harboured within virus particles is released into the cytosol following successful entry. The flexibility of the system permits evaluation of not only total fusion levels, but also the kinetics of fusion. However, significant variation exists in the scientific literature regarding the methodology by which the assay is applied to viral fusion analysis, making comparison between results difficult. In this review we draw attention to the disparity of these methodologies and examine the advantages and disadvantages of each approach. Successful strategies shown to render viruses compatible with BlaM-based analyses are also discussed. View Full-Text
Keywords: β-lactamase; BlaM; CCF2-AM; FRET; fusion; kinetics; virus β-lactamase; BlaM; CCF2-AM; FRET; fusion; kinetics; virus
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jones, D.M.; Padilla-Parra, S. The β-Lactamase Assay: Harnessing a FRET Biosensor to Analyse Viral Fusion Mechanisms. Sensors 2016, 16, 950.

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