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- W4234092610 abstract "Double-stranded (ds) DNA is capable of the sequence-specific accommodation of an additional oligodeoxyribonucleotide strand by the peptide nucleic acid(PNA)-assisted formation of a so-called PD-loop. We demonstrate here that the PD-loop may function as an artificial primosome within linear, nonsupercoiled DNA duplexes. DNA polymerase with its strand displacement activity uses this construct to initiate the primer extension reaction at a designated dsDNA site. The primer is extended by several hundred nucleotides. The efficiency of dsDNA priming by the artificial primosome assembly is comparable to the single-stranded DNA priming used in various assays. The ability of the PD-loop structure to perform like an artificial primosome on linear dsDNA may find applications in biochemistry, molecular biology, and molecular biotechnology, as well as for DNA diagnostics. In particular, multiple labels can be incorporated into a chosen dsDNA site resulting in ultrasensitive direct quantification of specific sequences. Furthermore, nondenaturing dsDNA sequencing proceeds from the PD-loop. This approach opens the way to direct isothermal reading of the DNA sequence against a background of unrelated DNA, thereby eliminating the need for purification of the target DNA." @default.
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- W4234092610 date "2001-02-02" @default.
- W4234092610 modified "2023-09-27" @default.
- W4234092610 title "An Artificial Primosome: Design, Function, and Applications" @default.
- W4234092610 doi "https://doi.org/10.1002/1439-7633(20010202)2:2<133::aid-cbic133>3.3.co;2-c" @default.
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