Enables lysophosphatidic acid binding activity; phosphatidylinositol phosphate binding activity; and phosphatidylserine binding activity. Involved in nervous system development; regulation of postsynaptic specialization assembly; and tissue regeneration. Located in cytoplasm. Is active in GABA-ergic synapse. Biomarker of visual epilepsy. Orthologous to human GAP43 (growth associated protein 43). [provided by Alliance of Genome Resources, Apr 2022]