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.[1]
↑Meinl W, Donath C, Schneider H, Sommer Y, Glatt H (April 2008). "SULT1C3, an orphan sequence of the human genome, encodes an enzyme activating various promutagens". Food Chem. Toxicol. 46 (4): 1249–56. doi:10.1016/j.fct.2007.08.040. PMID17936463.