Glycosyltransferase with a proposed role in glycosphingolipid biosynthesis (PubMed:12944392, PubMed:10924467). Involved in susceptibility to pore-forming crystal toxins in conjunction with bre-1, bre-2, bre-4 and bre-5 (PubMed:12944392, PubMed:10924467). Involved in resistance to the nematotoxic C.cinerea galectin Cgl2 (PubMed:20062796). Has a role in determining brood size (PubMed:12944392, PubMed:10924467). Protein modification; protein glycosylation. In punctate structures throughout the cell. Endothelial cells. Worms exhibit resistance to the Cry5B toxin produced by Bacillus thuringiensis. This is thought to be due to mutants having reduced population of glycolipids which are targeted by the Cry5B protein. Mutants also have reduced brood sizes at only 17% of wild-type N2. Belongs to the glycosyltransferase 2 family.