Predicted to enable GTPase activity; identical protein binding activity; and molecular adaptor activity. Acts upstream of or within cortical cytoskeleton organization; mitotic cytokinesis; and plasma membrane bounded cell projection organization. Located in axon terminus; cell body; and septin cytoskeleton. Part of septin complex. Is active in presynaptic membrane. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; respiratory system; and sensory organ. Orthologous to human SEPTIN7 (septin 7). [provided by Alliance of Genome Resources, Apr 2022]