Filament-forming cytoskeletal GTPase (Probable). Involved in the migration of cortical neurons and the formation of neuron leading processes during embryonic development (By similarity). Plays a role in sperm head formation during spermiogenesis, potentially via facilitating localization of ACTN4 to cell filaments .
Subcellular locations: Cytoplasm, Cytoplasm, Cytoskeleton, Cell projection, Axon, Cell projection, Dendrite, Perikaryon, Cytoplasm, Perinuclear region, Cytoplasmic vesicle, Secretory vesicle, Acrosome
Colocalizes with actin stress fibers . Expressed in the perinuclear rim and manchette structure in early elongating spermatids during spermiogenesis (By similarity).
Testis-specific (at protein level).