Involved in local disassembly of cortical microtubules when associated with ICR5 and KIN13A. Component of the active ARAC10-IRC5-KIN13A complex (PubMed:24280391). Interacts with ICR5 (PubMed:22984069). Recruited along cortical microtubules upon interaction with ICR5. Belongs to the small GTPase superfamily. Rho family.