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DNA-Directed Functionalization of Colloidal Gold with Proteins This work was supported by Deutsche Forschungsgemeinschaft and Fonds der Chemischen Industrie. We thank Prof. D. Blohm for helpful discussions and generous support.

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2001

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Abstract

A supramolecular construction kit comprises DNA-functionalized gold nanoparticles, covalent DNA–streptavidin conjugates, and biotinylated antibodies and allows the generation of functional nanoparticle reagents (see schematic illustration). The combination of specific antibodies and DNA-stabilized colloidal gold is applicable for the detection of antigens attached to a chip.