In addition, four virulence genes were also detrimental to yeast growth, ExoA - PA1148, ExoS - PA3841, ExoT - PA0044, ExoY - PA2191.
Each of these four toxins are secreted or translocated by the type II (ExoA) or type III secretion system (ExoS, ExoT, ExoY) and each act within the infected host cell.