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A.b.z dna

  1. Jan 27, 2010 #1

    How do I tell whether the DNA strand is left or right handed? (for some reason I keep getting right handed for all 3 types of DNA even though this shouldn't be right?)

    and is there any difference between A,b,z DNA BEYond that there is a change in the spacing of bp before a twist?

  2. jcsd
  3. Feb 2, 2010 #2
    The best way, I feel, is to look at the backbone (of sugar and phosphate) as it passes along the front of the molecule: if it is going up and to the right, it's right-handed; and if it is going up and to the left, it's left-handed.
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