Enables acetylglucosaminyltransferase activity. Involved in several processes, including carbohydrate biosynthetic process; positive regulation of Notch signaling pathway; and regulation of mesodermal cell fate specification. Predicted to be located in Golgi membrane. Human ortholog(s) of this gene implicated in pancreatic cancer. Is an ortholog of human B3GALNT1 (
beta-1,3-N-acetylgalactosaminyltransferase 1 (Globoside blood group)); B3GALT9 (
beta-1,3-galactosyltransferase 9); and B3GNT5 (UDP-GlcNAc:betaGal
beta-1,3-N-acetylglucosaminyltransferase 5).