Nitrogen compounds biological transformations

Fig. 12-1 Biological transformations of nitrogen compounds. The numbers refer to processes described in the text.

Khan MTH (2007) Recent Advances on the Sugar-Derived Heterocycles and Their Precursors as Inhibitors Against Glycogen Phosphorylases (GP). 9 33-52 Khan MTH (2007) Heterocyclic Compounds Against the Enzyme Tyrosinase Essential for Melanin Production Biochemical Features of Inhibition. 9 119-138 Khan MTH (2007) Molecular Modeling of the Biologically Active Alkaloids. 10 75-98 Khan MTH, Ather A (2007) Microbial Transformation of Nitrogenous Compounds. 10 99-122... 

The cyclic transformation of nitrogenous compounds is of great importance in the total turnover of this element in the biosphere. The main features of the biological nitrogen cycle are illustrated schematically in Fig. 4.16. Plants and algae assimilate nitrogen as either nitrate or ammonia to form... 

Table 1 shows examples of some of the microorganisms involved in different biotransformation processes [11]. The following sections cite some more recent examples of microbial transformation of biologically important compounds, especially alkaloids and nitrogen-containing compounds. 

Wiesmann, U. Biological Nitrogen Removal from Wastewater. Vol. 51, p. 113 Winterhalter, P., Skouroumounis, G. K. Glycoconjugated Aroma Compounds Occurence, Role and Biotechnological Transformation. Vol. 55, p. 73... 

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