| EC number category | LIGAND | KEGG | SwissProt | PIR | PDB | GenBank | ||||
| kegg | total | kegg | total | kegg | total | kegg | total | |||
| EC 1. Oxidoreductases | 861 | 509 | 267 | 339 | 269 | 352 | 79 | 99 | 263 | 314 |
| EC 2. Transferases | 970 | 441 | 256 | 370 | 234 | 342 | 52 | 74 | 244 | 337 |
| EC 3. Hydrolases | 898 | 264 | 145 | 451 | 132 | 398 | 51 | 150 | 141 | 341 |
| EC 4. Lyases | 316 | 209 | 128 | 148 | 117 | 135 | 28 | 35 | 123 | 140 |
| EC 5. Isomerases | 140 | 92 | 54 | 61 | 51 | 58 | 18 | 21 | 52 | 59 |
| EC 6. Ligases | 118 | 90 | 61 | 73 | 59 | 65 | 18 | 20 | 64 | 68 |
| Total | 3303 | 1605 | 911 | 1442 | 862 | 1350 | 246 | 399 | 887 | 1259 |
| (Note) | (1) | (2) | (3) | (4) | (3) | (4) | (3) | (4) | (3) | (4) |
(1) Number of ENZYME entries (unique EC numbers) in LIGAND.
(2) Unique EC numbers found in KEGG.
(3) Unique EC numbers in the database that are also found in KEGG.
(4) Unique EC numbers in the database.
Last updated: Jan 16, 1998