GAL3ST1 encodes the human gene, Galactose-3-O-sulfotransferase 1. It may also be known as: Galactosylceramide sulfotransferase; GalCer sulfotransferase; 3'-phosphoadenosine-5'-phosphosulfate:GalCer sulfotransferase; 3'-phosphoadenylylsulfate:galactosylceramide 3'-sulfotransferase; Cerebroside sulfotransferase; cerebroside (3' phosphoadenylylsulfate:galactosylceramide 3') sulfotransferase; CST. The encoded protein is an enzyme with an amino acid length of 423 and a mass of 48.8 kDa. Other isoforms may exist. GAL3ST1 is a member of the Galactose-3-O-sulfotransferase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.