Cooperative DNA Probing Using a β-Cyclodextrin−DNA Conjugate and a Nucleobase-Specific Fluorescent Ligand
2009
A single nucleotide polymorphism (SNP) base on the target is displayed at a gap in a ternary duplex carrying β-cyclodextrin-modified DNA. A stable tandem duplex forms regardless of the type of SNP base. A nucleobase-specific ligand is then added to this system. The dansyl moiety in the ligand is expected to form a luminous inclusion complex with nearby β-CyD, only when the ligand recognizes the specific base displayed in the gap.
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