A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped kickstart life.

NAD⁺ is a coenzyme central to redox reactions, shuttling electrons in metabolic pathways and thereby supporting ATP ...

Regulation of cellular levels of ADP-ribose is important in preventing nonenzymatic ADP-ribosylation of proteins. The Escherichia coli ADP-ribose pyrophosphatase, a Nudix enzyme, catalyzes the ...

Diabetic patients frequently suffer from retinopathy, nephropathy, neuropathy and accelerated atherosclerosis. The loss of endothelial function precedes these vascular alterations. Here we report that ...

Everything on Earth is made of atoms, most of which are closely packed together in the form of minerals. Life has its uses for minerals—ask a coral reef—but its essence lies in atoms arranged as ...