Predicted to enable amyloid-beta binding activity; enzyme binding activity; and enzyme inhibitor activity. Acts upstream of or within chemical synaptic transmission; in utero embryonic development; and regulation of gene expression. Predicted to be located in perinuclear region of cytoplasm. Predicted to be active in cytoplasm; dendritic spine; and plasma membrane. Orthologous to human APBA3 (amyloid beta precursor protein binding family A member 3). [provided by Alliance of Genome Resources, Apr 2022]