Predicted to enable Notch binding activity and polypeptide N-acetylgalactosaminyltransferase activity. Predicted to be involved in several processes, including Notch signaling involved in heart development; cellular protein metabolic process; and regulation of Notch signaling pathway. Predicted to be located in Golgi membrane. Predicted to be integral component of membrane. Predicted to be active in Golgi apparatus. Orthologous to human GALNT11 (polypeptide N-acetylgalactosaminyltransferase 11). [provided by Alliance of Genome Resources, Apr 2022]