GTPase-activating protein for RHO1. Must be involved in the normal assembly or function or both of actin. Plays an essential role only at low temperatures.
Phosphoinositide phosphatase that preferentially hydrolyzes PtdIns(4)P. Regulates the accumulation of PtdIns(4)P on membrane compartments at the tips of growing root hairs leading to proper root hair development.
Essential component of cell cytoskeleton; plays an important role in cytoplasmic streaming, cell shape determination, cell division, organelle movement and extension growth.