Most diazotrophs make large amounts of ATP through cellular respiration by "burning" oxygen - even though nitrogenase is ...

Most diazotrophs make large amounts of ATP through cellular respiration by "burning" oxygen—even though nitrogenase is extremely sensitive to oxygen. Scientists have long wondered how a ...

This phenomenon is now deemed the key stressor on marine ecosystems. Because nitrogenase can be inhibited by oxygen, free-living organisms behave as anaerobes or microaerophiles while fixing nitrogen.

A fascinating aspect of nitrogenase is that it operates only in the absence of oxygen and requires lots of energy to break the inert triple bond of the nitrogen gas molecule. To allow nitrogenase ...