GPI-anchored cell wall protein involved in cell wall organization, hyphal growth, as well as in host-fungal interaction and virulence. Repressed by HAP43. O-glycosylated. Leads to hypersensitivity to cell wall-damaging agents and highly attenuated in a murine model of systemic infection. IFF11 differs from other HYR1/IFF family members in lacking a GPI-anchor. Belongs to the HYR1/IFF family.