a question - Biology Forum

last updated by

MrMistery 16 years, 1 month ago

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3 replies

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- January 3, 2009 at 5:18 pm #10681
  prateeiik
  Participant
  Does guanine have two binding sites as compared to the other nitrogenous bases??
  Please confirm!!
- January 3, 2009 at 9:59 pm #88208
  canan5000
  Participant
  Please clarify what you mean by binding site. Guanine does have two sites that it can bind (hydrogen bonds) to cytosine with when it is in DNA. Hope this is the binding you were looking for.
- January 4, 2009 at 1:24 pm #88216
  whizzbee
  Participant
  I think there are 3 hydrogen bonds between guanine and cytosine, and 2 hydrogen bonds between adenine and thymine.
- January 4, 2009 at 10:39 pm #88219
  MrMistery
  Participant
  whizzbee is right
  http://projects.cbe.ab.ca/Diefenbaker/B … mage35.gif
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