Predicted to enable manganese ion binding activity and polypeptide N-acetylgalactosaminyltransferase activity. Predicted to be involved in protein O-linked glycosylation and protein maturation. Predicted to be located in Golgi stack and perinuclear region of cytoplasm. Predicted to be active in Golgi apparatus. Is expressed in several structures, including alimentary system; brain ventricular layer; floor plate; lens; and lung mesenchyme. Human ortholog(s) of this gene implicated in congenital disorder of glycosylation type II. Orthologous to human GALNT2 (polypeptide N-acetylgalactosaminyltransferase 2). [provided by Alliance of Genome Resources, Apr 2022]