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Publication Detail
Disentangling steric and electrostatic factors in nanoscale transport through confined space.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Buchsbaum SF, Mitchell N, Martin H, Wiggin M, Marziali A, Coveney PV, Siwy Z, Howorka S
  • Publication date:
  • Pagination:
    3890, 3896
  • Journal:
    Nano Lett
  • Volume:
  • Issue:
  • Status:
  • Country:
    United States
  • Language:
  • Keywords:
    Biopolymers, DNA, Models, Molecular, Molecular Structure, Nanopores, Peptides, Static Electricity
The voltage-driven passage of biological polymers through nanoscale pores is an analytically, technologically, and biologically relevant process. Despite various studies on homopolymer translocation there are still several open questions on the fundamental aspects of pore transport. One of the most important unresolved issues revolves around the passage of biopolymers which vary in charge and volume along their sequence. Here we exploit an experimentally tunable system to disentangle and quantify electrostatic and steric factors. This new, fundamental framework facilitates the understanding of how complex biopolymers are transported through confined space and indicates how their translocation can be slowed down to enable future sensing methods.
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