Predicted to enable GTP binding activity and double-stranded RNA binding activity. Predicted to be a structural constituent of cytoskeleton. Predicted to be involved in microtubule cytoskeleton organization and mitotic cell cycle. Predicted to be active in cytoplasm and microtubule. Human ortholog(s) of this gene implicated in Leber congenital amaurosis with early-onset deafness. Orthologous to human TUBB4B (tubulin beta 4B class IVb).