Molybdenum , in nitrogen fixation

In animal metabolism, oxomolybdoenzymes catalyse a number of oxidation processes. These oxidases contain Mo coordinated to terminal O and S atoms, and their action appears to involve loss of an O or S atom along with reduction to Mo or Mo". It is, however, the role of molybdenum in nitrogen fixation which has received most attention. 

The function of molybdenum in enzymic mechanisms has been reviewed and the role of molybdenum in nitrogen fixation examined. ... 

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