Pyrene-labeled deoxyguanosine as a fluorescence sensor to discriminate single and double stranded DNA structures: Design of ends free molecular beacons

A novel fluorescent DNA probe containing pyrene-labeled C8 alkylamino-substituted 2′-deoxyguanosine was designed in order to discriminate single stranded and double stranded regions in DNA. This fluorescent sensor was used for the design of practically useful 3′- and 5′-ends free self-quenched molecular beacon (MB). Unique MB detectable by pyrene excimer fluorescence was also demonstrated.

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