Strand displacement recognition of mixed adenine-cytosine sequences in double stranded DNA by thymine-guanine PNA (peptide nucleic acid).


Mixed pyrimidine-purine peptide nucleic acids (PNAs) composed of thymines and guanines are shown to form a PNA(2)-DNA triplex with Watson-Crick complementary adenine-cytosine oligonucleotides and to bind complementary adenine-cytosine targets in double stranded DNA by helix invasion. These results for the first time demonstrate binding of an unmodified PNA… (More)


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