The nitrogenase enzyme, which catalyzes the reduction of N2 gas to NH4+, occurs as three separate isoenzymes that use Mo, Fe-only, or V. The majority of global nitrogen fixation is attributed to the m
Soil diazotrophs are ubiquitous bacteria and archaea responsible for converting atmospheric nitrogen into plant-available ammonium. This process, if properly harnessed, can ameliorate excessive fertil
We investigate the hidden diversity and distributions of nitrogenases and diazotrophs, and compile evidence for their in situ activities within deep-sea cold seep sediments.