Bacterial denitrification pathway (None)

The bacterial denitrification pathway is a stepwise respiratory process in which bacteria reduce nitrate (NO₃⁻) to dinitrogen gas (N₂) via intermediates nitrite (NO₂⁻), nitric oxide (NO), and nitrous oxide (N₂O), primarily using four enzyme systems: nitrate reductase, nitrite reductase, nitric oxide reductase, and nitrous oxide reductase. This process allows bacteria to generate energy in oxygen-poor environments and plays a central role in global nitrogen cycling, environmental nitrogen removal, and greenhouse gas emissions. Individual enzymes, not the pathway as a whole, may be considered distinct drug targets or biomarkers in clinical and research settings.

Other names

Denitrificationmicrobial denitrificationnitrogen oxide reduction pathway

For enzyme inhibitors within the pathway: competitive or non-competitive inhibition of the enzyme's active site, blocking electron transfer and nitrogen oxide reduction