Possible factor for Δ of an amino acid | Key reaction responsible for ε of an amino acid | Classification of amino acids | |||
---|---|---|---|---|---|
Nitrogen | Carbon | Nitrogen | Carbon | ||
Aromatic | - | - | - | - |
Source -Essential |
Branched | Deamination flux of the amino acid | - | Deamination of the amino acid | - |
Trophic -Essential |
Others | Balance between deamination and biosynthetic flux of the amino acid | Biosynthetic flux of the amino acid | Deamination of the amino acid | Decarboxylation of the precursor (e.g., pyruvic acid and α-ketoglutaric acid) |
Trophic -Nonessential |