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We report a novel method for the rapid, sensitive, and quantitative detection of alkanes, alcohols, and aldehydes that relies on the reaction of bacterial luciferase with an aldehyde, resulting in the emission of light. Primary alcohols with corresponding aldehydes that are within the substrate range of the particular luciferase are detected after conversion to the aldehyde by an alcohol dehydrogenase. In addition, alkanes themselves may be detected by conversion to primary alcohols by an alkane hydroxylase, followed by conversion to the aldehyde by alcohol dehydrogenase. We developed a rapid bioluminescent method by genetically engineering the genes encoding bacterial luciferase, alcohol dehydrogenase, and alkane hydroxylase into a plasmid for simultaneous expression in an E. coli host cell line. Alkanes, alcohols, or aldehydes were detected within seconds, with sensitivity in the micromolar range, by measuring the resulting light emission with a microplate reader. We demonstrate the application of this method for the detection of alkanes, alcohols, and aldehydes and for the detection of alkane hydroxylase and alcohol dehydrogenase activity in vivo. This method is amenable to the high‐throughput screening needs required for the identification of novel catalysts. © 2004 Wiley Periodicals, Inc.
Biotechnology and Bioengineering – Wiley
Published: Jul 20, 2004
Keywords: high throughput screening; biosensor; detection of alkanes, alcohols, and aldehydes; bacterial luciferase; biocatalysis; oxidation catalysts
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