Alanine Cysteine Glycine Isoleucine Phenylalanine Serine Leucine Lysine Tryptophan Threonine Tryptophan Leucine Tyrosine Glucose Tryptophan Acetyl-CoA≥ Acetoacetyl CoA Phosphoenol- Pyruvate pyruvate Glucogenic amino acids Asparagine Oxaloacetate Ketogenic amino acids Aspartate Ketogenic and Aspartate Citric glucogenic amino acids Phenylalanine Fumarate acid Tyrosine cycle Citrate Arginine Glutamate Isoleucine Succinyl-CoA a-Ketoglutarate Glutamine Methionine Histidine Threonine Proline Valine