Abstract
The A3 peptide, discovered by in vitro evolution, has been shown to bind silver and gold nanoparticles. We chemically conjugated the A3 peptide to a 20-mer oligonucleotide, thereby generating an A3 peptide-oligonucleotide conjugate (A3 POC). The A3 POC bears the complementary sequence to 10 single-stranded DNA "capture" probes extending outward from the surface of an origami DNA fixed-length nanotube. After assembling the A3 POC-nanotube complex in Hepes buffer, AuCl4-was added to induce Au nanoparticle (NP) nucleation and growth. Transmission electron microscopy revealed that a majority of the fixed-length tubes were decorated with 5 to 6 Au NPs (~10 nm in diameter) each, while a negative control (no A3 POC) showed NPs that were not localized to the DNA tubes. At present, we are working to optimize Au NP nucleation to achieve the maximum of 10 NPs per tube, while minimizing salt-induced aggregation effects.
Original language | English (US) |
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Title of host publication | Extended Abstracts for 6th Annual Conference on Foundations of Nanoscience: Self-Assembled Architectures and Devices, FNANO 2009 |
Pages | 89-92 |
Number of pages | 4 |
State | Published - 2009 |
Event | 6th Annual Conference on Foundations of Nanoscience: Self-Assembled Architectures and Devices, FNANO 2009 - Snowbird, UT, United States Duration: Apr 20 2009 → Apr 24 2009 |
Other
Other | 6th Annual Conference on Foundations of Nanoscience: Self-Assembled Architectures and Devices, FNANO 2009 |
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Country/Territory | United States |
City | Snowbird, UT |
Period | 4/20/09 → 4/24/09 |
ASJC Scopus subject areas
- Hardware and Architecture
- Electrical and Electronic Engineering