Table 2.
HOBACGEN 10 Largest Families
| Family name | No. of proteins |
| ABC transporters | 874 |
| Bacterial flagellin | 559 |
| NifH/FrxC family | 439 |
| Outer membrane protein (OmpC/OmpK) | 390 |
| LuxR/UhpA transcriptional regulators | 338 |
| Porin | 338 |
| RNA polymerase ς70 factor | 314 |
| Type II topoisomerases | 305 |
| Short-chain dehydrogenases/reductases | 293 |
| Major outer membrane lipoprotein | 291 |
| Total | 4,141 |
