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 ...

The more researchers examine RNA, the more surprises they continue to uncover. What have we learned about RNA structure and function so far? Although RNA is a single-stranded molecule, researchers ...

By Sage Rohrbach A mosaic image of the Bennu Asteriod, created using pictures from NASA’s OSIRIS-REx satellite that was near the asteroid for over two years. Courtesy of NASA via Wikimedia ...

The chemical structure of uracil, showing its single-ring pyrimidine structure. Uracil forms hydrogen bonds with adenine in RNA, contributing to the molecule's structure and function. (Image: Public ...

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

Scientists detected all five nucleobases -- building blocks of DNA and RNA -- in samples returned from asteroid Bennu by NASA's OSIRIS-REx mission.

Asteroids, small airless bodies within the inner solar system, are theorized to have contributed water and chemical building blocks of life to Earth billions of years ago. Although meteorites on Earth ...

Japanese collaborators detected all five nucleobases — building blocks of DNA and RNA — in samples returned from asteroid ...

In a paper published today (August 15) in PNAS, scientists from the Scripps Research Institute in La Jolla, California, report on their use of in vitro evolution to generate an improved polymerase ...

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 ...

that make up RNA and DNA. Cancer cells must have access to pyrimidine supplies to produce more cancer cells and to produce uridine nucleotides, a primary fuel source for cancer cells as they ...