Enables galactosyltransferase activity. Predicted to be involved in glycosphingolipid biosynthetic process. Predicted to act upstream of or within globoside biosynthetic process and plasma membrane organization. Predicted to be located in membrane. Orthologous to human A4GALT (alpha 1,4-galactosyltransferase (P blood group)). [provided by Alliance of Genome Resources, Apr 2022]