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Yeast. 2012 Dec;29(12):505-17. doi: 10.1002/yea.2931. Epub 2012 Nov 21.

Construction of a cytosolic firefly luciferase reporter cassette for use in PCR-mediated gene deletion and fusion in Saccharomyces cerevisiae.

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Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.


Monitoring promoter response to environmental changes using reporter systems has provided invaluable information regarding cellular state. With the development of in vivo luciferase reporter systems, inexpensive, sensitive and accurate promoter assays have been developed without the variability reported between in vitro samplings. Current luciferase reporter systems, however, are largely inflexible to modifications to the promoter of interest. To overcome problems in flexibility and stability of these expression vectors, we report the creation of a novel vector system which introduces a cytosol-localized Photinus pyralis luciferase [LUC*(-SKL)] capable of one-step, in vivo measurements into a promoter-reporter system via PCR-based gene deletion and fusion. After introduction of the reporter under HUG1 promoter control, cytosolic localization was confirmed by fluorescence microscopy. The dose-response of this novel construct was then compared with that of a similar HUG1Δ::yEGFP1 promoter-reporter system and shown to give a similar response pattern.

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