Sulfotransferase enzymes catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs, and xenobiotic compounds. These cytosolic enzymes are different in their tissue distributions and substrate specificities. The gene structure (number and length of exons) is similar among family members. However, the total genomic length of this gene is greater than that of other SULT1 genes.Synonyms: ST1B1, ST1B2, SULT1B2, Sulfotransferase 1B1, Sulfotransferase 1B2, Sulfotransferase family cytosolic 1B member 1, Thyroid hormone sulfotransferase