(thing) by /dev/null Mon May 22 2000 at 0:05:57

One of the nitrogenous bases in DNA and RNA. It is the complement of cytosine.

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(thing) by jafuser Sat Sep 23 2000 at 4:24:05

structural formula of guanine:

 H      N           O
  \ //     \      //
   C        C -- C
    \      //     \
     N -- C        N -- H
           \      /
            N == C
                  \
                   N -- H
                  /
                 H

See also: adenine, thymine, cytosine, and uracil.

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