Abstract
DNA analysis is an important technology with respect to diagnosis of infectious disease and tailored medication. In this study, we developed a novel bioluminescent assay for pyrophosphate, and it was applied to single-nucleotide polymorphism (SNP) analysis using one-base extension reaction. The principle of this method is as follows. A specific primer within each aliquot possessing a short 3′ end of the base of interest was hybridized to the single-stranded DNA template. Subsequently, (exo-)Klenow DNA polymerase and one of either α-thio-dATP, dTTP, dGTP, or dCTP were added and incubated for 1 min. Pyrophosphate released by DNA polymerase is converted to ATP by pyruvate phosphate dikinase (PPDK), and the concentration of ATP is determined using the firefly luciferase reaction. This method, which does not require expensive equipment, can be used to rapidly monitor one point mutation in the gene.
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