In biosynthesis of amino acids, inorganic ammonium nitrogen is incorporated to organic acid to form amino acid glutamate. In reductive deamination, ammonium ion combine directly with carboxylic acid (e.g., intermediate of Krebs??cycle, $\alpha$-ketoglutaric acid). The reaction is catalysed by enzyme glutamate dehydrogenase and $NADPH + H^{+}$ acts as hydrogen donor
The naturally occurring inorganic nutrient found in the soil and food that is necessary for the proper functioning of animal and plant bodies is defined as nutrition. Minerals are vital elements essential for the body.
