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Good DNA Q any ideas???

Discussion in 'DAT Discussions' started by tRNA, Apr 27, 2007.

  1. tRNA

    tRNA Member 10+ Year Member

    280
    0
    Apr 28, 2005
    What difference(s) in DNA structure, as compared to RNA structure, make it more suited to the job of long-term information STORAGE and WHY?
     
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  3. domonas

    domonas Junior Member 5+ Year Member

    118
    4
    Jul 26, 2006
    well, the three differences between DNA and RNA is the 2' oxygen (present in RNA, absent in DNA), DNA uses T while RNA uses U, and DNA is 2x stranded while RNA is 1x stranded (the vast majority of the time).

    2x strand leads to stability
    mRNA with the cap and poly a+ tail is marked for degredation (research has shown that length of poly A+ tail is proportional to stability outside of the nucleus)
    that one 2' oxygen in RNA makes it less stable (why, i don't really know)

    does that help at all?
     
  4. kevin512

    kevin512 :) 10+ Year Member

    264
    11
    Mar 20, 2007
    Gainesville, FL
    I think base pairing is the main answer to your question. mRNA is single stranded and therefore more prone to chemical forces.

    or maybe enzymes like to eat mRNA more because it taste better.
     

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