Predicted to enable xylosylprotein 4-beta-galactosyltransferase activity. Predicted to be involved in glycosylation and proteoglycan biosynthetic process. Predicted to act upstream of or within carbohydrate metabolic process and protein glycosylation. Predicted to be located in Golgi cisterna membrane and Golgi membrane. Predicted to be active in Golgi apparatus. Human ortholog(s) of this gene implicated in Ehlers-Danlos syndrome and Ehlers-Danlos syndrome spondylodysplastic type 1. Orthologous to human B4GALT7 (beta-1,4-galactosyltransferase 7).