Enables hydrolase activity, hydrolyzing N-glycosyl compounds and mannosidase activity. Acts upstream of or within several processes, including N-glycan processing; animal organ development; and positive regulation of neurogenesis. Located in Golgi membrane; cis-Golgi network; and extracellular space. Is expressed in adrenal gland; gland; and white fat. Used to study congenital dyserythropoietic anemia and systemic lupus erythematosus. Orthologous to human MAN2A1 (mannosidase alpha class 2A member 1). [provided by Alliance of Genome Resources, Apr 2022]