Enables UDP-N-acetylglucosamine-dolichyl-phosphate N-acetylglucosaminephosphotransferase activity. Involved in UDP-N-acetylglucosamine metabolic process; dolichol metabolic process; and dolichol-linked oligosaccharide biosynthetic process. Located in intracellular membrane-bounded organelle. Human ortholog(s) of this gene implicated in congenital disorder of glycosylation Ij and congenital myasthenic syndrome 13. Orthologous to human DPAGT1 (dolichyl-phosphate N-acetylglucosaminephosphotransferase 1). [provided by Alliance of Genome Resources, Apr 2022]