| Nomenclature | Erythrocyte urea transporter | Kidney urea transporter |
| Systematic nomenclature | SLC14A1 | SLC14A2 |
| Common abbreviation | UT-B | UT-A |
| HGNC, UniProt | SLC14A1, Q13336 | SLC14A2, Q15849 |
| Endogenous substrates | ammonium carbonate 246, urea 246, formamide 246 | urea 244 |
| Substrates | acrylamide 246, acetamide 246, methylurea 246 | – |
| Stoichiometry | Equilibrative | Equilibrative |
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