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Rotation of DNA in electric field

  1. Feb 22, 2014 #1
    As known the DNA molecule has got negative electric charge. Imagine that linear (almost like a straight arrow) DNA is placed in water solution and we turn the electric field on. I would like to know if the DNA molecules can orientate/rotate so that they to stay along the field lines of the electric field.
    I have heard that that in Pulsed-field gel electrophoresis exactly this approach is used: the electric field can orientate the DNA molecules.

    So, is it possible? :rolleyes:
  2. jcsd
  3. Feb 22, 2014 #2


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    Staff: Mentor

    What prevents them from moving towards the positive electrode?

    I guess the orientation will depend on the charge distribution.
  4. Feb 23, 2014 #3
    Of course nothing
    But I want to know if they are arranged along the field lines or not :rolleyes:
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