Predicted to enable O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase activity. Involved in marginal zone B cell differentiation and regulation of Notch signaling pathway. Acts upstream of or within blastocyst formation; positive regulation of Notch signaling pathway; and positive regulation of protein binding activity. Predicted to be located in Golgi apparatus and membrane. Predicted to be integral component of Golgi membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; peripheral nervous system; and sensory organ. Orthologous to human MFNG (MFNG O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase). [provided by Alliance of Genome Resources, Apr 2022]