Enables SH3 domain binding activity; chondroitin sulfate binding activity; and identical protein binding activity. Involved in several processes, including actin filament organization; regulation of plasma membrane bounded cell projection organization; and response to axon injury. Located in several cellular components, including cell body; growth cone; and lamellipodium. Part of filamentous actin. Is active in synapse. Colocalizes with exocytic vesicle. Orthologous to human DPYSL3 (dihydropyrimidinase like 3). [provided by Alliance of Genome Resources, Apr 2022]