Predicted to enable magnesium ion binding activity; manganese ion binding activity; and protein xylosyltransferase activity. Acts upstream of or within heparin biosynthetic process and proteoglycan biosynthetic process. Predicted to be located in extracellular space. Is expressed in alimentary system; cardiovascular system; integumental system; and nervous system. Used to study polycystic kidney disease. Human ortholog(s) of this gene implicated in pseudoxanthoma elasticum. Orthologous to human XYLT2 (xylosyltransferase 2). [provided by Alliance of Genome Resources, Apr 2022]