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Copper(II)-quenched oligonucleotide probes for fluorescent DNA sensing
1Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
Journal of the American Chemical Society
|October 21, 2004
Abstract:
A copper(II)-quenched molecular beacon was prepared by attaching fluorescein to the 3'-end and a copper(II) complex to the 5'-end of DNA. In the presence of complementary DNA, copper(II) and dye are spatially separated in the duplex and fluorescence increases up to 15-fold, with excellent discrimination of single base mismatches.

