An important product of protein catabolism is ammonia. Using Figures 18.26 and18.27, outline the urea cycle. Emphasize cellular compartmentation of reactions, substrates, products and related steps. Using Figure 18.29, identify amino acids as glucogenic, ketogenic or both. Group the amino acids by the common pathways of metabolism of their carbon frames.
Amino acids serve as the precursors of many important biomolecules besides protein.
We will not have time to consider this in much detail.