Nitrogenases are enzymes (EC 1.18.6.1 EC 1.19.6.1) that are produced by certain bacteria, such as cyanobacteria (blue-green bacteria) and rhizobacteria. These enzymes are responsible for the reduction of nitrogen (N 2) to ammonia (NH 3).

2014年1月27日 · In 1934, Burk coined the term “nitrogenase” for the enzyme that catalyzes the conversion of N 2 to a bioaccessible form of nitrogen, and initiated the first meaningful studies of nitrogenase in living cells.

Nitrogenase is a complex, bacterial enzyme that catalyzes the ATP-dependent reduction of dinitrogen (N 2) to ammonia (NH 3). In its most prevalent form, it consists of two proteins, the catalytic molybdenum-iron protein (MoFeP) and its specific reductase, the iron protein (FeP).

In nitrogen-fixing bacteria, the enzyme nitrogenase drives the reaction with a large quantity of ATP, and uses a collection of metal ions, including an unusual molybdenum ion, to perform the reaction. Nitrogenase is composed of two components, shown here from entry 1n2c .

Biological nitrogen fixation — the reduction of N 2 to two NH 3 molecules — supports more than half the human population. This reaction is catalyzed by the enzyme nitrogenase, whose predominant form, discussed here, comprises an electron-delivery Fe protein and a …

2025年1月28日 · What is Nitrogenase? Nitrogenase is an enzyme complex that catalyzes the chemical reaction converting atmospheric nitrogen (N₂) into ammonia (NH₃), a process known as nitrogen fixation. This reaction is crucial for incorporating inert atmospheric nitrogen into organic compounds, which plants and other organisms can utilize for growth.

Nitrogenase catalyzes the reduction of N 2 to NH 3, a key step in the global nitrogen cycle. This article describes our journey toward the definition of a complete molecular structure of the active site of nitrogenase, with an emphasis on the discovery of the interstitial carbide and the radical SAM-dependent insertion of this atom into the ...

2020年6月15日 · The reduction of dinitrogen to ammonia by nitrogenase reflects a complex choreography involving two component proteins, MgATP and reductant. At center stage of this process resides the active site ...

Nitrogenase catalyzes biological nitrogen fixation, a key step in the global nitrogen cycle. Three homologous nitrogenases have been identified to date, along with several structural and/or functional homologs of this enzyme that are involved in nitrogenase assembly, bacteriochlorophyll biosynthesis and methanogenic process, respectively.

Biological nitrogen fixation is catalyzed by nitrogenase, an enzyme composed of two component proteins called the Fe protein and the MoFe protein.