Predicted to enable metal ion binding activity and protein xylosyltransferase activity. Predicted to act upstream of or within chondroitin sulfate biosynthetic process and heparan sulfate proteoglycan biosynthetic process. Predicted to be located in Golgi membrane. Human ortholog(s) of this gene implicated in Desbuquois dysplasia; pseudoxanthoma elasticum; and type 1 diabetes mellitus. Orthologous to human XYLT1 (xylosyltransferase 1).