Predicted to enable actin binding activity and small GTPase binding activity. Involved in actin filament polymerization. Located in cytoplasm and nucleus. Is expressed in several structures, including alimentary system; brain; gonad; spleen; and vibrissa. Used to study autosomal dominant auditory neuropathy 1 and congenital dyserythropoietic anemia. Human ortholog(s) of this gene implicated in autosomal dominant auditory neuropathy 1. Orthologous to human DIAPH3 (diaphanous related formin 3). [provided by Alliance of Genome Resources, Apr 2022]