Jump to main content
Jump to site search

Issue 12, 2015
Previous Article Next Article

DNA driven self-assembly of micron-sized rods using DNA-grafted bacteriophage fd virions

Author affiliations

Abstract

We have functionalized the sides of fd bacteriophage virions with oligonucleotides to induce DNA hybridization driven self-assembly of high aspect ratio filamentous particles. Potential impacts of this new structure range from an entirely new building block in DNA origami structures, inclusion of virions in DNA nanostructures and nanomachines, to a new means of adding thermotropic control to lyotropic liquid crystal systems. A protocol for producing the virions in bulk is reviewed. Thiolated oligonucleotides are attached to the viral capsid using a heterobifunctional chemical linker. A commonly used system is utilized, where a sticky, single-stranded DNA strand is connected to an inert double-stranded spacer to increase inter-particle connectivity. Solutions of fd virions carrying complementary strands are mixed, annealed, and their aggregation is studied using dynamic light scattering (DLS), fluorescence microscopy, and atomic force microscopy (AFM). Aggregation is clearly observed on cooling, with some degree of local order, and is reversible when temperature is cycled through the DNA hybridization transition.

Graphical abstract: DNA driven self-assembly of micron-sized rods using DNA-grafted bacteriophage fd virions

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Nov 2014, accepted on 23 Feb 2015 and first published on 24 Feb 2015


Article type: Paper
DOI: 10.1039/C4CP05405A
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 8194-8202
  •   Request permissions

    DNA driven self-assembly of micron-sized rods using DNA-grafted bacteriophage fd virions

    R. R. Unwin, R. A. Cabanas, T. Yanagishima, T. R. Blower, H. Takahashi, G. P. C. Salmond, J. M. Edwardson, S. Fraden and E. Eiser, Phys. Chem. Chem. Phys., 2015, 17, 8194
    DOI: 10.1039/C4CP05405A

Search articles by author

Spotlight

Advertisements