Sulfite efflux pump required for the secretion of sulfite as a reducing agent (By similarity). Plays a role in resistance to neutrophils during infection. Involved in transition to filamentous growth, which is believed to be central to the virulence of this human pathogen. Up-regulated by cysteine, nitic oxide, and in response to neutrophil phagocytosis. Expression is under the control of GCN2, GCN4 and ZCF2. Leads to enhanced sensitivity to both cysteine and sulfite. Belongs to the tellurite-resistance/dicarboxylate transporter (TDT) family.