Predicted to enable acetylglucosaminyltransferase activity. Acts upstream of or within several processes, including inter-male aggressive behavior; kidney morphogenesis; and thyroid hormone metabolic process. Predicted to be located in Golgi apparatus and membrane. Predicted to be integral component of membrane. Orthologous to human GCNT4 (glucosaminyl (N-acetyl) transferase 4). [provided by Alliance of Genome Resources, Apr 2022]