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DNA Primer Extension with Cyclopropenylated 7-Deaza-2′-deoxyadenosine and Efficient Bioorthogonal Labeling in Vitro and in Living Cells I Publication

 

A deoxyadenosine triphosphate (dATP) analogue for DNA labeling was synthesized with the 1-methylcyclopropene (1MCP) group at the 7-position of 7-deaza-2′-deoxyadenosine and applied for primer extension experiments. The real-time kinetic data reveals that this 1MCP-modified dATP analogue is incorporated into DNA much faster than that of the similarly 1MCP-modified deoxyuridine triphosphate (dUTP) analogue. The postsynthetic fluorescent labeling of these oligonucleotides works efficiently according to PAGE analysis, and can be applied for immobilization of a functional antibody on a surface. Site-specific labeling at two different positions in DNA was achieved and the bioorthogonality of the postsynthetic fluorescent labeling was demonstrated in living HeLa cells.

 ChemBioChem I 2018 

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