Self-assembly of DNA concatemers from native duplexes and those containing non-nucleotidic bridges of varying polarity composed of repeating oligo(ethylene glycol) phosphates -O(CH2CH2O)(n)PO2- or α,Ω-alkanediol phosphates -O(CH2)10OPO2(-)- units was compared. The structures obtained were characterised by polyacrylamide gel electrophoresis, enzymatic digestion and AFM. Our results have revealed that chemically-modified duplexes favour self-termination of concatemer growth and yield up to 35% of nanosized DNA rings.
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| http://dx.doi.org/10.1166/jnn.2015.9796 | DOI Listing |
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