Ferredoxin-Nitrite Reductase

**Definition:** An IRON-containing protein that uses siroheme and 4Fe-4S iron-sulfur centers as prosthetic groups. It catalyzes the six-electron oxidation of AMMONIA to nitrite.

**Tree numbers:** - D08.811.682.655.750.249 - D12.776.157.427.374.375.150 - D12.776.556.579.374.375.150