Predicted to enable dolichyl pyrophosphate Glc2Man9GlcNAc2 alpha-1,2-glucosyltransferase activity. Involved in potassium ion transmembrane transport. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum. Human ortholog(s) of this gene implicated in long QT syndrome 2. Orthologous to several human genes including ALG10 (ALG10 alpha-1,2-glucosyltransferase). [provided by Alliance of Genome Resources, Apr 2022]