The remaining positions are occupied by carbon atoms, forming the backbone of important nucleobases in DNA and RNA. (Image: Public Domain) Types of Pyrimidines in Nucleic Acids There are three types ...

To multiply rapidly, cancer cells need to quickly manufacture DNA and RNA, which requires sufficient quantities of purines and pyrimidines. Upon analyzing the levels of 3,000 genes in a T cell ...

have discovered how cellular metabolism fluctuates in response to changes in levels of pyrimidines, metabolites used by cells ...

Rather, DNA was first identified in the late 1860s ... In other words, the total amount of purines (A + G) and the total amount of pyrimidines (C + T) are usually nearly equal.

DNA integrity is always under attack from environmental ... During photoreactivation, an enzyme called photolyase binds pyrimidine dimer lesions; in addition, a second molecule known as ...

This image illustrates the chemical structures of the five main nucleobases found in DNA and RNA. The pyrimidines, thymine (DNA), uracil (RNA), and cytosine are shown on top while the purines, adenine ...