in which a purine or pyrimidine base is linked to C1 of the sugar. The prefix mono- di- or tri- denote the number of phosphate groups present on the nucleotide. It is important to distinguish the ...

It is known that measurements of purine and pyrimidine catabolites in the CSF can be used as an indicator for cerebral energy failure, or even as an early marker for brain cell damage (8).

This diagram depicts the chemical structure of pyrimidine, a six-membered aromatic ring with two nitrogen atoms at positions 1 and 3 (highlighted in blue). The remaining positions are occupied by ...

If the sugar is a ribose, then the purine bases are called adenine or guanine, depending on the position of the 2-amino group, and the pyrimidines are called cytosine, uridine, and thymidine.

In the paper, the scientists look at purines and pyrimidines—the two nitrogenous bases of nucleotides. Previously, it was thought that purines and pyrimidines must have emerged as a result of ...

This study is the first to show that both purines and pyrimidines can be formed from a common precursor molecule that existed before life began. “We provide a new perspective on how the original RNA ...

This study is the first to show that both purines and pyrimidines can be formed from a common precursor molecule that existed before life began. "We provide a new perspective on how the original ...

Here we perform a systematic biochemical screen for bacterial signalling nucleotides and discover a large family of cGAS/DncV-like nucleotidyltransferases (CD-NTases) that use both purine and ...