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DNA Nanotechnology

Volume 749 of the series Methods in Molecular Biology pp 115-140

Date:

Synthesis of Long DNA-Based Nanowires

  • Alexander KotlyarAffiliated withDepartment of Biochemistry, The George S. Wise Faculty of Life Sciences, Tel Aviv University Email author 

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Abstract

Here we describe novel procedures for production of DNA-based nanowires. This include synthesis and characterization of the one-to-one double-helical complex of poly(dG)–poly(dC), triple-helical poly(dG)–poly(dG)–poly(dC) and G4-DNA, which is a quadruple-helical form of DNA. All these types of DNA-based molecules were synthesized enzymatically using Klenow exo fragment of DNA Polymerase I. All the above types of nanowires are characterized by a narrow-size distribution of molecules. The contour length of the molecules can be varied from tens to hundreds of nanometers. These structures possess improved conductive and mechanical properties with respect to a canonical random-sequenced DNA and can possibly be used as wire-like conducting or semiconducting nanostructures in the field of nanoelectronics.

Key words

DNA nanowires Enzymatic synthesis Klenow exo Poly(dG)–poly(dC) G4-DNA Triplex DNA