Table 1 Three reduced core models D1, D2 and D3
| Â | D1 | D2 | D3 |
|---|---|---|---|
Reactions | 828 | 704 | 750 |
 Core | 278 | 307 | 343 |
 Lumped | 550 | 397 | 407 |
% of reactions with estimated standard Gibbs free energy | 70.4 | 70.8 | 62.3 |
Metabolites | 286 | 306 | 336 |
 Cytosolic | 156 | 174 | 200 |
 Periplasmic | 70 | 71 | 74 |
 Extracellular | 60 | 61 | 62 |
% of metabolites with estimated standard Gibbs free energy | 81.8 | 82.7 | 82.1 |