The purine structure consists of a pyrimidine ring (positions 1 to 6) fused to an imidazole ring (positions 7 to 9). Adenine and guanine, the two most common purines in DNA and RNA, share this core ...
This molecule crystallizes in hydrogen bonded pairs, as is commonly found for purines and pyrimidines, but the structure is unusual in that the two bases do not lie in the same plane.
The pyrimidines, thymine (DNA), uracil (RNA), and cytosine are shown on top while the purines, adenine and guanine, are shown at the bottom. (Image: adapted from Wikimedia Commons, public domain) The ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback