Predicted to enable several functions, including GTP binding activity; GTPase activity; and magnesium ion binding activity. Predicted to be involved in several processes, including flagellated sperm motility; positive regulation of intrinsic apoptotic signaling pathway; and positive regulation of protein ubiquitination. Predicted to act upstream of or within brain development; sperm capacitation; and sperm mitochondrion organization. Predicted to be located in several cellular components, including dendrite; perikaryon; and sperm flagellum. Predicted to be part of septin complex. Predicted to be active in several cellular components, including cytoskeleton; sperm annulus; and synaptic vesicle. Orthologous to human SEPTIN4 (septin 4). [provided by Alliance of Genome Resources, Apr 2022]