SULT6B1 is a symbol for the gene, Sulfotransferase family 6B member 1, in humans. Other names include: Sulfotransferase 6B1; Thyroxine sulfotransferase; ST6B1; sulfotransferase family, cytosolic, 6B, member 1. The encoded protein is an enzyme with an amino acid length of 303 and a mass of 34.9 kDa. SULT6B1 is a member of the Sulfotransferase 1 family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.