| Abbreviation | Protein name | Location | Transported solute(s) | Associated disorder(s) |
|---|
| SLC22A1 | Solute carrier family 22 member 1 | Liver, Brain (Cerebellum) |
| SLC22A2 | Solute carrier family 22 member 2 | Primarily in kidney, also in brain |
| SLC22A3 | Solute carrier family 22 member 3 | Brain and kidney | Histamine Dopamine Serotonin Norepinephrine MPP+ |
| SLC22A4 | Solute carrier family 22 member 4 | Sodium ion and Ergothioneine |
| SLC22A5 | Solute carrier family 22 member 5 | Primary carnitine deficiency |
| SLC22A6 | Solute carrier family 22 member 6 |
| SLC22A7 | Solute carrier family 22 member 7 |
| SLC22A8 | Solute carrier family 22 member 8 |
| SLC22A9 | Solute carrier family 22 member 9 |
| SLC22A10 | Solute carrier family 22 member 10 |
| SLC22A11 | Solute carrier family 22 member 11 |
| SLC22A12 | Solute carrier family 22 member 12 | Kidney | Uric acid | Hyperuricemia and hypouricemia |
| SLC22A13 | Solute carrier family 22 member 13 |
| SLC22A14 | Solute carrier family 22 member 14 |
| SLC22A15 | Solute carrier family 22 member 15 |
| SLC22A16 | Solute carrier family 22 member 16 |
| SLC22A17 | Solute carrier family 22 member 17 |
| SLC22A18 | Solute carrier family 22 member 18 | Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocortical carcinoma, and lung, ovarian, and breast cancer |
| SLC22A19 | Solute carrier family 22 member 19 |
| SLC22A20 | Solute carrier family 22 member 20 |
|