Predicted to enable alpha-1,6-mannosyltransferase activity. Predicted to be involved in protein N-linked glycosylation. Predicted to act upstream of or within dolichol-linked oligosaccharide biosynthetic process. Predicted to be located in endoplasmic reticulum lumen and membrane. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum membrane. Human ortholog(s) of this gene implicated in congenital disorder of glycosylation Ig. Orthologous to human ALG12 (ALG12 alpha-1,6-mannosyltransferase). [provided by Alliance of Genome Resources, Apr 2022]