Enables spectrin binding activity and syntaxin binding activity. Involved in actin cytoskeleton reorganization. Located in plasma membrane. Part of protein-containing complex. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 5. Orthologous to human SPTAN1 (spectrin alpha, non-erythrocytic 1). [provided by Alliance of Genome Resources, Apr 2022]