Nitrite reductase: Difference between revisions

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	<StructureSection load='Cca.pdb' size='450' side='right' scene='Journal:JBIC:16/Cv/2' caption=''>		<StructureSection load='Cca.pdb' size='450' side='right' scene='Journal:JBIC:16/Cv/2' caption='Heme-containing nitrite reductase with heme and Ca+2 ions (PDB code [[3ubr]])'>
	'''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 for 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 for this purpose.

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