Predicted to enable phosphotransferase activity, alcohol group as acceptor. Predicted to be involved in proteoglycan biosynthetic process. Predicted to be located in cytoplasm and nucleoplasm. Predicted to colocalize with Golgi apparatus. Orthologous to human FAM20B (FAM20B glycosaminoglycan xylosylkinase). [provided by Alliance of Genome Resources, Apr 2022]