Abstract
We chemically synthesized a series of aminooxy derivatives to develop novel probes for sensitive detection of abasic (AP) sites in DNA. The results of the conjugation reactions showed that the probes could efficiently react to AP sites by introducing an aromatic or a guanidino group in their structures. In particular, the probe having both functional groups showed the most effective reactivity, indicating that hydrophobic and electrostatic interactions cooperatively acted in the reaction of the probe to AP sites. We then synthesized a biotinylated probe and succeeded in more sensitive detection of AP sites in genomic DNA than with the conventional aldehyde reactive probe (ARP).
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