Predicted to enable identical protein binding activity. Acts upstream of or within several processes, including brain development; regulation of epidermal growth factor-activated receptor activity; and suckling behavior. Predicted to be located in nucleus. Is expressed in several structures, including axial musculature; compacted morula; lower urinary tract; submandibular gland primordium; and ventral grey horn. Orthologous to human APLP2 (amyloid beta precursor like protein 2). [provided by Alliance of Genome Resources, Apr 2022]