Table 1 Elementary flux modes of the metabolic network considered.

r_e1:

Glucose → 2 Lactate

r_e2:

Glucose → 6 CO₂

r_e3:

Glutamine → 2 CO₂ + Ammonia+ Alanine

r_e4:

Glutamine → Lactate + 2 CO₂ + 2 Ammonia

r_e5:

Glutamine → 5 CO₂ + 2 Ammonia

r_e6:

Glucose + 3 Glutamine → Purine + 2 CO₂ + Ammonia

r_e7:

Glucose + 2 Glutamine → Pyrimidine + 2 CO₂ + Ammonia