https://www.selleckchem.com/pr....oducts/pf-06952229.h
Single-molecule fluorescence energy transfer (FRET) detection has become a key technique to monitor intra- and intermolecular distance changes in biological processes. As the sensitive detection range of conventional FRET pairs is limited to 3-8 nm, complement probes are necessary for extending this typical working range. Here, we realized a single-molecule FRET assay for a short distance range of below 3 nm by using a Cy2-Cy7 pair having extremely small spectral overlap. Using two DNA duplexes with a small difference in the labelin
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