Predicted to enable polypeptide N-acetylgalactosaminyltransferase activity. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in Golgi apparatus. Is expressed in several structures, including alimentary system; central nervous system; retina; and skeleton. Orthologous to human GALNT5 (polypeptide N-acetylgalactosaminyltransferase 5). [provided by Alliance of Genome Resources, Apr 2022]