Predicted to enable galactosylceramide sulfotransferase activity. Predicted to be involved in galactosylceramide biosynthetic process; glycerolipid metabolic process; and myelination. Predicted to act upstream of or within spermatogenesis. Predicted to be integral component of membrane. Orthologous to human GAL3ST1 (galactose-3-O-sulfotransferase 1). [provided by Alliance of Genome Resources, Apr 2022]