Dinitrogen monoxide reductase

Dinitrogen monoxide reductase, 6, 727 Dinuclear compounds symmetrical nomenclature, 1,122 unsymmetrical nomenclature, 1,123 Dioctylamine... 

Copper-deficient cells of Ps. perfectomarinus give N20 rather than dinitrogen from nitrite. This has led to the interesting suggestion that the dinitrogen monoxide reductase is a copper protein,15361537 but it appears that the properties of the copper protein differ from those of the dinitrogen monoxide reductase.1538 The copper protein may well lie on the electron-transfer pathway to the N20 reductase. 

Copper-deficient cells of Ps. perfectomarinus give NjO rather than dinitrogen from nitrite. This has led to the interesting suggestion that the dinitrogen monoxide reductase is a copper pro-... 

While reduction beyond nitrite requires the synthesis of nitrite reductases, there is one case (from E. coli) where the nitrate reductase is suggested to reduce nitrite to dinitrogen monoxide.1513... 

While this formally may follow assimilatory (to NH3) or dissimilatory (to N2) pathways, it is becoming clear that a number of non-denitrifiers are also able to produce dinitrogen monoxide by reduction of nitrite.1513,1514 Furthermore, reduction of nitrite to ammonia by one pathway (the NADPH-sulfite reductase) does not appear to be an assimilatory process, but rather one in which catabolic reducing equivalents are removed. 

The reduction of nitrite by Klebsiella pneumoniae gives 5% N20 and 95% NH4+. Mutants defective in the reduction of nitrite to ammonium ions produced dinitrogen monoxide at rates comparable to the parent strain. This suggests that the nitrite reductase giving N20 was distinct from that producing NH4+.1535... 

Heme d,6 another isobacteriochlorin, occurs as one of two cofactors in the reductase cytochrome cdj which mediates the nitrite reduction to nitrogen monoxide (NO) and from there to dinitrogen oxide (N20) in denitrifying bacteria.7... 

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