SLC9B1 and infection: Other DEGs include two sodium efflux transporters, ENA1 and NHA1, that cooperatively maintain the intracellular pH and homeostasis of several toxic cations [62], OPT1, which encodes an oligopeptide transporter required in Qsp1-dependent quorum sensing, which mediates autoregulatory signalling, modulates secreted protease activity and promotes cell wall function at high yeast cell densities [63, 64], and PMC1, a vacuolar calcium ATPase, which is critical for both the progression of pulmonary infection and brain colonization in a murine infection model [65, 66].