- WNK Lysine Deficient Protein Kinase 3 (WNK3)
- WNK Lysine Deficient Protein Kinase 2 (WNK2)
- WNK Lysine Deficient Protein Kinase 1 (WNK1)
- UDP Glucuronate Decarboxylase 1 (UXS1)
- Uronyl-2-Sulfotransferase (UST)
- Uroporphyrinogen III Synthase (UROS)
- Uracil DNA Glycosylase (UNG)
- UDP Glycosyltransferase 8 (UGT8)
- UDP Glucuronosyltransferase 1 Family, Polypeptide A1 (UGT1A1)
- UDP Glucuronosyltransferase 2 Family, Polypeptide A1 (UGT2A1)
- UDP Glucuronosyltransferase 2 Family, Polypeptide A3 (UGT2A3)
- UDP Glucuronosyltransferase 1 Family, Polypeptide A3 (UGT1A3)
- UDP Glucuronosyltransferase 1 Family, Polypeptide A4 (UGT1A4)
- UDP Glucuronosyltransferase 1 Family, Polypeptide A5 (UGT1A5)
- UDP Glucuronosyltransferase 1 Family, Polypeptide A6 (UGT1A6)
