Involved in virulence (By similarity). Induces cytotoxic effects on mouse macrophage cell lines, via direct or indirect enzymatic hydrolysis of cell membrane phospholipids (By similarity). Hydrolyzes phosphatidylcholine (By similarity). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1,2-diacyl-sn-glycerol + H(+) + phosphocholine Remains associated with the cell. Predicted to be exported by the Tat system. The position of the signal peptide cleavage has not been experimentally proven. Polymorphism was discovered in the phospholipase plcD region. Belongs to the bacterial phospholipase C family.