Ferredoxin—nitrite reductase
Ferredoxin—nitrite reductase - brief summary
In enzymology, a ferredoxin—nitrite reductase (EC 1.7.7.1) is an enzyme that catalyzes the chemical reaction NH3 + 2 H2O + 6 oxidized ferredoxin nitrite + 6 reduced ferredoxin + 7 H+ The 3 substrates of this enzyme are NH3, H2O, and , whereas its 3 products are nitrite, and H+. This enzyme can use many different isoforms of ferredoxin. In photosynthesizing tissues, it uses ferredoxin that is reduced by PSI and in the root it uses a form of ferredoxin (FdIII) that has a less negative midpoint potential and can be reduced easily by NADPH.
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Contributors: Prab R. Tumpati, MD
