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Home > Pyrimidine

 
Pyrimidine is an organic compound, a conjugated amine which is similar to benzene, but with a heterocyclic ring: two nitrogen

atoms taking the place of carbon atoms at positions 1 and 3 relative to each other around the six-member ring.

Three bases of the nucleic acids, namely cytosine, thymine, and

uracil, are pyrimidine derivatives. In DNA, these bases form hydrogen bonds with their complementary purines. purine pyrimidine A T G C

In RNA, the complement of A is U instead of T:

purine pyrimidine A U G C

These hydrogen bonding modes are for classical Watson-Crick base pairing. Other hydrogen bonding modes are available in both DNA and RNA, although the additional 2'-hydroxyl group of RNA expands the configurations through which RNA can form hydrogen bonds.

Biochemicals Heterocyclic bases

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PyrimidinePyrimidine is an organic compound, a conjugated amine which is similar to benzene, but with a heterocyclic ring: two nitrogen atoms taking the place of carbon atoms at positions 1 and 3 relative to each other around the six-member ring. Three bases of the  
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