SULT1B1 encodes the human gene, Sulfotransferase family 1B member 1. It may also be known as: Sulfotransferase family cytosolic 1B member 1; Sulfotransferase 1B1; Sulfotransferase 1B2; ST1B2; Thyroid hormone sulfotransferase; ST1B1; SULT1B2; sulfotransferase family, cytosolic, 1B, member 1. The encoded protein is an enzyme with an amino acid length of 296 and a mass of 34.9 kDa. SULT1B1 is a member of the Sulfotransferase 1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.