Plays a role in cell wall integrity. Affects the cell wall polymer composition in the growing region of the cell. Localizes on the inner surface of the plasma membrane at the bud and in the daughter cell. Localizes at an incipient bud site in the cells with emerging buds, a bud tip in small- or medium-budded cells, and a cell periphery in large-budded cells. Belongs to the SKG1 family.