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Fluorescence resonance energy transfer (FRET) using ssDNA binding fluorescent dye



Fluorescence resonance energy transfer (FRET) using ssDNA binding fluorescent dye



Biomolecular Engineering 21(2): 45-50



There is a need for simple and inexpensive methods for genotyping single nucleotide poly morphisms (SNPs) and short insertion/deletion variations (InDels). In this work, I demonstrate that a single-stranded DNA (ssDNA) binding dye can be used as a donor fluorophore for fluorescence resonance energy transfer (FRET), The method presented is a homogenous assay in which detection is based oil the FRET from the fluorescence of the ssDNA dye bound to the unmodified detection primer to the fluorescent nucleotide analog incorporated into this detection primer during cyclic template directed primer extension reaction. Collection of the FRET emission spectrum with a scanning fluorescence spectrophotometer allows powerful data analysis. The fluorescence emission signal is modified by the optical propel-ties of the assay vessel. This seems to be a completely neglected parameter. By proper selection of the optical properties of the assay plate one call improve the detection of the fluorescence emission signal. Copyright 2003 Elsevier B.V. All rights reserved.

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Accession: 012095654

Download citation: RISBibTeXText

PMID: 15113557

DOI: 10.1016/j.bioeng.2003.09.001



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