Nitrite reductase: Difference between revisions
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<StructureSection load='Cca.pdb' size=' | <StructureSection load='Cca.pdb' size='450' side='right' scene='Journal:JBIC:16/Cv/2' caption=''> | ||
'''Nitrite reductase''' (NIR) catalyzes the reduction of NO2 to NO. There are 2 classes of NIR: (1) A heme-containing cytochrome Cd type NIR. This enzyme contains 4 heme groups. Its d-type heme group binds NO<sub>2</sub>. (2) A copper-containing NIR which produces NO<sub>2</sub>. Under anaerobic conditions bacteria rely on the reduction of nitrogen oxide species to obtain energy. NIR is part of the nitrogen cycle used fot this purpose. | '''Nitrite reductase''' (NIR) catalyzes the reduction of NO2 to NO. There are 2 classes of NIR: (1) A heme-containing cytochrome Cd type NIR. This enzyme contains 4 heme groups. Its d-type heme group binds NO<sub>2</sub>. (2) A copper-containing NIR which produces NO<sub>2</sub>. Under anaerobic conditions bacteria rely on the reduction of nitrogen oxide species to obtain energy. NIR is part of the nitrogen cycle used fot this purpose. | ||