Involved in controlling polarized cell growth. Required for interphase actin cable formation and microtubule organization. Interacts with rax2, rho3 and tea4. Interacts with tea1 in the presence of tea4. Found at the cell periphery and the growing tips of interphase cells. Localized to the septum region during cell division and upon cell division begins to localize to the new end, with some remaining at the older end. Belongs to the formin homology family.