Table 1. Comparison between YMDB and YMDB 2.0.
| Features | YMDB | YMDB 2.0 |
|---|---|---|
| Number of metabolite entries | 2007 | 16 042 |
| Number of data fields | 81 | 99 |
| Number of external DB links | 15 | 17 |
| Number of synonyms | 26 920 | 41 686 |
| Number of pathways | 66 | 9595 |
| Number of reactions | 916 | 31 624 |
| Number of enzymes | 857 | 919 |
| Number of transporters | 137 | 159 |
| Compounds with concentration data | 627 | 797 |
| Number of experimental NMR spectra | 930 | 1572 |
| Number of compounds with Expt NMR | 466 | 788 |
| Number of experimental MS/MS spectra | 1346 | 3154 |
| Number of Compounds with Expt MS/MS | 317 | 333 |
| Number of experimental GC/MS spectra | 208 | 1079 |
| Number of Compounds with Expt GC/MS | 208 | 448 |
| Number of predicted MS/MS spectra | 0 | 22 649 |
| Number of predicted GC/MS spectra | 0 | 1143 |