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. 2014 Jan 21;42(7):e50. doi: 10.1093/nar/gkt1406

Figure 1.

Figure 1.

Methyltransferase-directed alkylation of DNA is followed by CuAAC at the alkylated site. (1) DNA is incubated along with a DNA methyltransferase enzyme (targeting adenine N6 for modification here) and a synthetically prepared cofactor (AdoEnYn). The methyltransferase is able to catalyse the transfer of the extended alkyl chain (grey) to the DNA duplex. (2) These modified sites on the DNA are subsequently fluorescently labelled via the CuAAC click reaction.