Resurrected ancient enzyme offers new window into early Earth and the search for life beyond it

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

Nitrate and nitrite in biology, nutrition and therapeutics

Inorganic nitrate and nitrite from endogenous or dietary sources are metabolized in vivo to nitric oxide (NO) and other bioactive nitrogen oxides. The nitrate-nitrite-NO pathway is emerging as an ...