Site-Selective Binding of Nanoparticles to Double-Stranded DNA via Peptide Nucleic Acid "Invasion"
We demonstrate a novel method for by-design placement of nano-objects along double-stranded (ds) DNA. A molecular intercalator, designed as a peptide nucleic acid (PNA)-DNA chimera, is able to invade dsDNA at the PNA-side due to the hybridization specificity between PNA and one of the duplex strands. At the same time, the single-stranded (ss) DNA tail of the chimera, allows for anchoring of nano-objects that have been functionalized with complementary ssDNA. The developed method is applied for interparticle attachment and for the fabrication of particle clusters using a dsDNA template. This method significantly broadens the molecular toolbox for constructing nanoscale systems by including the most conventional not yet utilized DNA motif, double helix DNA.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE - OFFICE OF SCIENCE
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1034084
- Report Number(s):
- BNL-93649-2011-JA; R&D Project: MA-114-MAEA; KC0203010; TRN: US201203%%384
- Journal Information:
- ACS Nano, Vol. 5, Issue 4; ISSN 1936-0851
- Country of Publication:
- United States
- Language:
- English
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