Predicted to enable beta-1,4-mannosylglycoprotein 4-beta-N-acetylglucosaminyltransferase activity. Predicted to be involved in N-acetylglucosamine metabolic process; protein localization; and regulation of cell migration. Predicted to act upstream of or within several processes, including amyloid-beta metabolic process; negative regulation of lysosomal protein catabolic process; and positive regulation of protein localization to early endosome. Predicted to be located in Golgi membrane. Predicted to be integral component of membrane. Orthologous to human MGAT3 (beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase). [provided by Alliance of Genome Resources, Apr 2022]