Enables cytoskeletal protein binding activity; opsin binding activity; and protein C-terminus binding activity. Predicted to act upstream of or within Golgi organization and lysosomal transport. Located in apical cortex and cortical cytoskeleton. Part of microtubule associated complex. Orthologous to human SPTBN5 (spectrin beta, non-erythrocytic 5). [provided by Alliance of Genome Resources, Apr 2022]