Researchers at Johns Hopkins Medicine, in collaboration with researchers at the National Institutes of Health, report that two new studies in mice with a humanized immune system and human cell lines ...

A protein that is involved in determining which enzymes cut or unwind DNA during the replication process has been identified. A protein that is involved in determining which enzymes cut or unwind DNA ...

Enzymes, which are crucial to controlling how cells replicate in the human body, could be the very ingredient that encourages DNA to spontaneously mutate -- causing potentially permanent genetic ...

In nature, evolution takes years to sculpt new traits. In the lab, scientists hope to achieve this feat much faster: Being able to evolve proteins with enhanced or novel functions has important ...

A Northwestern Medicine study has revealed a previously unknown connection between two fundamental cellular processes, ...

This story is part of a larger series on viroids and virusoids, small infectious RNAs. It is also the fifth installment in a series on hepatitis D virus, a virusoid-like pathogen that causes serious ...

Since HIV’s discovery in the 1980s, scientists have come a long way in understanding the different steps required for its assembly and maturation. Researchers knew, for instance, that HIV wraps its ...

The viral replication cycle is crucial for a virus to spread inside the body and cause disease. Focusing on that cycle in the hepatitis A virus (HAV), UNC School of Medicine scientists discovered that ...

Enzymes are the molecular machines that power life; they build and break down molecules, copy DNA, digest food, and drive ...