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 ...

A longitudinal increase in the somatic cytosine-adenine-guanine repeat expansion ratio in blood predicted brain atrophy. Changes in cerebrospinal fluid (CSF) neurofilament light (NfL) protein and ...

IN the nucleic acids, cytosine is connected to a sugar residue through N 1 of the pyrimidine ring. Here we describe the results of an X-ray diffraction analysis of crystals of N 1-methyl cytosine.

Cytosine base editors still face several limitations in practical microbial genome engineering. Here, the authors develop a high-efficiency, unbiased, wide-window, and low off-target cytosine base ...