Table 5.
Classification of ABC transporters of Rlv3841 compared to those of S. meliloti 1021
| Family | R. leguminosarum | S. meliloti | ||
| ABC genes | Complete systems | ABC genes | Complete systems | |
| Uptake systems | ||||
| CUT1 | 46 | 36 | 29 | 26 |
| CUT2 | 35 | 29 | 37 | 37 |
| FeCT | 5 | 3 | 5 | 5 |
| FeT | 2 | 2 | 1 | 1 |
| HAAT | 22 | 11 | 10 | 5 |
| MolT | 1 | 1 | 1 | 1 |
| MZT | 3 | 3 | 2 | 2 |
| NitT | 11 | 5 | 4 | 4 |
| PAAT | 16 | 13 | 16 | 13 |
| PepT | 49 | 30 | 33 | 25 |
| PhnT | 3 | 1 | 1 | 1 |
| PhoT | 2 | 2 | 1 | 1 |
| POPT | 8 | 7 | 12 | 12 |
| QAT | 6 | 5 | 5 | 4 |
| SulT | 1 | 1 | 2 | 1 |
| TauT | 0 | 0 | 1 | 1 |
| ThiT | 2 | 0 | 1 | 1 |
| Unclassified | 26 | 13 | 18 | 6 |
| Efflux systems | ||||
| Export | 31 | 21 | 21 | 18 |
| Total | 269 | 183 | 200 | 164 |
Families are defined according to Saier [93]. Complete uptake systems possess at least one solute binding protein, one ATP-binding cassette (ABC), and one integral membrane protein. Complete export systems need only possess one ABC and one integral membrane protein.