| The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine, cytosine and uracil. |
| Uric acid is a byproduct of the metabolism of purine, a protein found particularly in red meat and offal, game, seafood and alcoholic drinks. |
| In the GART locus, however, simultaneous transcription of the purine gene and the intronic gene seems possible. |
| The chemical and biological effects of UV radiation on purine and pyrimidine nucleosides and nucleotides have been the subject of many studies. |
| The synthesis of nucleotides from the purine bases and purine nucleosides takes place in a series of steps known as the salvage pathways. |
| A nucleotide is a combination of a ribose or deoxyribose sugar, a purine or pyrimidine base, and a phosphate group. |
