Predicted to enable mannosyl-oligosaccharide 1,2-alpha-mannosidase activity. Predicted to be involved in N-glycan processing. Predicted to act upstream of or within glycoprotein metabolic process; lung alveolus development; and respiratory gaseous exchange by respiratory system. Predicted to be located in Golgi apparatus. Predicted to be active in Golgi membrane and endoplasmic reticulum. Orthologous to human MAN1A2 (mannosidase alpha class 1A member 2). [provided by Alliance of Genome Resources, Apr 2022]