Enzyme Redundancy and the Importance of 2-Oxoglutarate in Higher Plant Ammonium Assimilation

The assimilation of inorganic N, in the form of ammonia, onto C skeletons for the production of amino acids is one of the most important biochemical processes in plants. In an actively growing plant, N is taken up as nitrate and to a lesser extent as ammonia. Nitrate is reduced in the cytoplasm by