The existence of multiple sulfotransferases (SULTS) was first discovered in 1958. Since then, any attempts to create a comprehensive text dedicated to sulfation and sulfotransferases have been rare and, thanks to rapid advances in molecular biology and biochemistry, quickly outdated. However, those advances have permitted an accelerated understanding of human sulfotransferase activity and with it the creation of a growing database on sulfotransferases that, until now, has remained scattered in the literature. Human Cytosolic Sulfotransferases serves an important function by the mere feat of cu.