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Nonenzymatic sequence-specific methyl transfer to single-stranded DNA.

B L Iverson·P B Dervan
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Abstract

2'-Deoxyuridine 5'-triphosphate with a methylthioether moiety at the 5 position can be incorporated into a primer-template DNA complex with Klenow enzyme. Activation with CNBr at 25 degrees C, pH 5.5, followed by treatment with piperidine produces sequence-specific cleavage on the template DNA predominantly at a single guanine position. The mechanism involves methyl-group transfer from sulfur on the modified deoxyuridine of the extended primer to N-7 of guanine on the template DNA. This raises the possibility for the design and synthesis of a nonenzymatic class of sequence-specific methyltransferases for DNA.

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Base SequenceDNA, Single-StrandedDNA-Directed DNA PolymeraseDeoxyuracil NucleotidesGuanineMethylationMolecular Sequence DataJournal Article

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B L Iverson, P B Dervan. 1988. Nonenzymatic sequence-specific methyl transfer to single-stranded DNA.. https://doi.org/10.1073/pnas.85.13.4615

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