Predicted to enable mannosyl-oligosaccharide 1,2-alpha-mannosidase activity. Predicted to be involved in N-glycan processing; mannose trimming involved in glycoprotein ERAD pathway; and protein targeting to ER. Located in Golgi membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; hindlimb mesenchyme; and sensory organ. Orthologous to human MAN1A1 (mannosidase alpha class 1A member 1). [provided by Alliance of Genome Resources, Apr 2022]