Required for proper cell morphogenesis and cell separation after mitosis. Functions in the RAM (regulation of ACE2 activity and cellular morphogenesis) signaling network and is required for proper ACE2 localization and CBK1 kinase activity. Localizes to cortical sites of growth during both budding and mating pheromone response. Localized prominently to incipient bud sites and small buds and weakly to the cortex and bud necks of large budded cells. Also localized to the growing tips of mating projections. Present with 892 molecules/cell in log phase SD medium.