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CHAPTER 20 PROTEIN METABOLISM. Nitrogen of Amino Acids. nitrogens to be excreted are collected in glutamate which is oxidized to a - ketoglutarate and NH 4 + . The Urea Cycle - Overview. Urea cycle: a cyclic pathway that produces urea from CO 2 and NH 4 + . Amino Acid Catabolism.
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CHAPTER 20 PROTEIN METABOLISM
Nitrogen of Amino Acids • nitrogensto be excreted are collected in glutamate • which is oxidized to a-ketoglutarate and NH4+.
The Urea Cycle - Overview • Urea cycle: a cyclic pathway that produces urea from CO2 and NH4+.
Amino Acid Catabolism • The breakdown of amino acid carbon skeletons follows two pathways. • glucogenic amino acids: those whose carbon skeletons are degraded to pyruvate or oxaloacetate, both of which may then be converted to glucose by gluconeogenesis. • ketogenic amino acids: those whose carbon skeletons are degraded to acetyl CoA or acetoacetylCoA.