NURSING ANM AND GNM

Detailed explanation-1: -Dinitrogenase reductase is a dimeric (2) Fe-protein of about 70 kDa with a 4Fe–4S cluster, which binds ATP and transfers electrons to dinitrogenase. The latter enzyme is a tetrameric (22) FeMo protein of about 220 kDa. It contains two Mo–Fe–S clusters and a variable number of Fe–S clusters and binds N2.

Detailed explanation-2: -The enzyme is composed of two-component metalloproteins called the iron (Fe) protein (also called dinitrogenase reductase or component II) and the molybdenum-iron (MoFe) protein (also called dinitrogenase or component I) (Figure 1).

Detailed explanation-3: -The enzyme nitrogenase is a Mo-Fe protein and catalyses the conversion of atmospheric nitrogen to ammonia.

Detailed explanation-4: -Dinitrogenase reductase transfers electrons from an electron donor to dinitrogenase, which then can catalyze the reduction of nitrogen to ammonium. Because nitrogen fixation is an energy-demanding process, it is tightly regulated in response to a number of environmental factors.

Detailed explanation-5: -Nitrogenases are enzymes (EC 1.18. 6.1EC 1.19. 6.1) that are produced by certain bacteria, such as cyanobacteria (blue-green bacteria) and rhizobacteria.