L-ornithine + H⁺ → putrescine + CO₂ (R1037)
- Silencing
  - Genome
acetyl-CoA + L-glutamate ↔ coenzyme A + N-acetyl-L-glutamate + H⁺ (R175)
- Feedback insensitive
  - Genome
agmatine + H₂O → putrescine + urea (R1090)
- Silencing
  - Genome
- Attenuation
  - Genome
succinyl-CoA + L-arginine ↔ coenzyme A + N²-succinyl-L-arginine + H⁺ (R886)
- Silencing
  - Genome
NAD⁺ + (R)-lactate ← NADH + pyruvate + H⁺ (R504)
- Silencing
  - Genome
    - Escherichia coli N12
coenzyme A + pyruvate + NAD⁺ → NADH + acetyl-CoA + CO₂ (R565)
- Silencing
  - Genome
    - Escherichia coli N12
H₂O + pyruvate + ubiquinone-8 → acetate + ubiquinol-8 + CO₂ (R4535)
- Silencing
  - Genome
    - Escherichia coli N12
- Attenuation
  - Genome
formate + acetyl-CoA ↔ coenzyme A + pyruvate (R278)
- Silencing
  - Genome
    - Escherichia coli N12
N-acetyl-L-glutamate 5-semialdehyde + NADP⁺ + phosphate ↔ N-acetylglutamyl-phosphate + NADPH + H⁺ (R381)
- Overexpression
  - Plasmid
    - Escherichia coli N11
    - Escherichia coli N12
  - Genome
N-acetyl-L-glutamate + ATP ↔ N-acetylglutamyl-phosphate + ADP (R374)
- Overexpression
  - Plasmid
    - Escherichia coli N11
    - Escherichia coli N12
  - Genome
L-arginino-succinate ↔ L-arginine + fumarate (R721)
- Overexpression
  - Plasmid
  - Genome
N-acetyl-L-ornithine + 2-oxoglutarate ↔ N-acetyl-L-glutamate 5-semialdehyde + L-glutamate (R559)
- Overexpression
  - Plasmid
    - Escherichia coli N11
    - Escherichia coli N12
  - Genome
L-citrulline + L-aspartate + ATP ↔ L-arginino-succinate + H⁺ + diphosphate + AMP (R624)
- Overexpression
  - Plasmid
  - Genome
L-ornithine + carbamoyl phosphate ↔ L-citrulline + H⁺ + phosphate (R134)
- Overexpression
  - Plasmid
  - Genome
ATP + H₂O + L-glutamine + hydrogencarbonate ↔ H⁺ + ADP + carbamoyl phosphate + L-glutamate + phosphate (R53)
- Overexpression
  - Plasmid
    - Escherichia coli N9
  - Genome
- Feedback insensitive
  - Genome
H₂O + L-glutamine + ATP + UTP → H⁺ + L-glutamate + phosphate + ADP + CTP (R285)
- Unstated
  - Genome
H₂O + N-acetyl-L-ornithine ↔ acetate + L-ornithine (R21)
- Silencing
  - Genome
H₂O + L-arginine + ATP ↔ L-arginine + phosphate + ADP (R1622)
- Silencing
  - Genome
NADP⁺ + D-threo-isocitrate → NADPH + 2-oxoglutarate + CO₂ (R384)
- Overexpression
  - Genome
  - Plasmid
    - Escherichia coli Arg4-4
phosphate + oxaloacetate ↔ phosphoenolpyruvate + hydrogencarbonate (R390)
- Overexpression
  - Genome
  - Plasmid
    - Escherichia coli Arg4-2
H₂O + acetyl-CoA + oxaloacetate → coenzyme A + H⁺ + citrate (R92)
- Attenuation
  - Genome
ammonium + L-glutamate + ATP → H⁺ + L-glutamine + phosphate + ADP (R1195)
- Silencing
  - Genome
    - Escherichia coli Arg9
    - Escherichia coli Arg10
- Overexpression
  - Plasmid
    - Escherichia coli Arg4-3
orotidine 5'-phosphate + H⁺ → UMP + CO₂ (R593)
- Attenuation
  - Genome
    - Escherichia coli Arg4-7
    - Escherichia coli Arg10
H₂O + NADP⁺ + L-glutamate ↔ NADPH + 2-oxoglutarate + H⁺ + ammonium (R1179)
- Overexpression
  - Plasmid
    - Escherichia coli Arg4-1
  - Genome
coenzyme A + acetate + ATP ↔ acetyl-CoA + diphosphate + AMP (R1142)
- Overexpression
  - Genome
L-aspartate ↔ ammonium + fumarate (R1558)
- Overexpression
  - Genome
NADH + NADP⁺ + H⁺ → NADPH + NAD⁺ + H⁺ (R427)
- Overexpression
  - Genome
H₂O + AMP → aldehydo-D-ribose 5-phosphate + adenine (R3061)
- Silencing
  - Genome
    - Escherichia coli A21
L-arginine → L-arginine (R00843)
- Overexpression
  - Genome
    - Escherichia coli A12
H⁺ + L-arginine ↔ agmatine + CO₂ (R3)
- Silencing
  - Genome
coenzyme A + 2-oxoglutarate + NAD⁺ → NADH + succinyl-CoA + CO₂ (R1038)
- Attenuation
  - Genome
- Silencing
  - Genome
    - Escherichia coli ERG7