Predicted to enable acetylglucosaminyltransferase activity. Involved in negative regulation of protein glycosylation. Located in several cellular components, including Golgi stack; endoplasmic reticulum; and endoplasmic reticulum-Golgi intermediate compartment. Orthologous to human MGAT4D (MGAT4 family member D). [provided by Alliance of Genome Resources, Apr 2022]