Enables SH3 domain binding activity and microtubule binding activity. Acts upstream of or within several processes, including animal organ morphogenesis; limb morphogenesis; and positive regulation of cellular component organization. Located in cytoplasm; microtubule cytoskeleton; and nucleus. Is expressed in several structures, including alimentary system; brain; genitourinary system; limb bud; and spleen. Orthologous to human FMN1 (formin 1). [provided by Alliance of Genome Resources, Apr 2022]