By resurrecting a 3.2-billion-year-old enzyme and studying it inside living microbes, researchers at the University of ...

A single enzyme that can generate all four nucleoside triphosphates, the building blocks of ribonucleic acid (RNA), has been ...

The immune system must maintain a delicate balance to defend against harmful threats while avoiding excessive inflammation.

Nitrogen, upon which all life on Earth depends, may hold the key for explaining how early life on the planet evolved and how it could evolve on other planets.

If severe DNA damage is not repaired, the consequences for the health of cells and tissues are dramatic. A study led by ...

Macrolides are an important class of antibiotics that includes drugs such as azithromycin and erythromycin, which are widely used to treat a range of infections, including pneumonia and skin ...

Enzymes are the molecular machines that power life; they build and break down molecules, copy DNA, digest food, and drive virtually every chemical reaction in our cells. For decades, scientists have ...

Homologous recombination is an ancient process that functions to conserve genetic integrity and create genetic diversity. It relies on the formation of Holliday junctions — four-stranded DNA ...

The reversible attachment of ubiquitin chains regulates the activity, localization and/or stability of a myriad of cellular proteins. The formation of ubiquitin chains requires the sequential action ...

Try this quiz based on GCSE Geography past papers. Choose the topic you would like to revise and answer the questions. By working your way through the questions created by experts, you can prepare for ...