Programmable DNA Lattices: Design Synthesis & Applications

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Presentation transcript:

Programmable DNA Lattices: Design Synthesis & Applications Duke University (PI John Reif) Subcontracts: NYU (Nadrian Seeman), Caltech (Erik Winfree & Niles Pierce) Scientific Objectives: Programmable construction of complex nanostructures of supramolecular (10-100 nm) scale: -DNA lattices with complex 2D patterning -periodic 3D DNA lattices. New Ideas: Molecular Self-assembly: -DNA strands self-assemble into DNA tile nanostructures. -DNA tiles self-assemble into periodic and aperiodic lattices. Algorithmic Self-assembly: -DNA tiles form DNA lattices with complex patterning. -Methodology is programmable by choice of DNA tiles. Nanostructure Templating and Patterning: -DNA lattice superstructure for other complex nanostructures. -Other molecular nanostructures attach to specific DNA strands within DNA lattices. Tiling Design for Binary Counter Impact to US defense: Protein structure determination via host-lattice crystals: -Periodic 3D DNA lattices capture proteins for X-ray diffraction. Key spin-off: Structural characterization of antigens from pathogens. Patterned DNA Lattice Technology: DNA nanostructures can serve as scaffolds for molecular sensors and actuators. Key Spin-off: identifying pathogens (e.g., bacteria). DNA lattices can be used as scaffolds for positioning molecular electronics components into complex circuits. Key Spin-off: Molecular Nanoelectronics. Schedule: Design of novel DNA tiles & lattices and support software Optimization algorithms for DNA design implemented. Patterned 2D DNA lattice: modest size (64 tiles) Periodic 3D DNA lattices: diffracting to 2.5 Å Characterization of error rates of self-assemblies Patterned 2D DNA lattices: moderate size(512 tiles) Periodic 3D DNA lattice: diffracting to 2.5 Å Self-assembly of 4-bit demultiplexing RAM Patterned 2D DNA lattices: thousands of tiles Periodic 3D DNA lattices: diffracting to 2.5 Å 2001 2002 2003 2004